Buick Riviera

First generation
Overview
Model years	1963–1965
Assembly	Buick City, Flint, Michigan Linden, New Jersey (Linden Assembly) United States
Designer	Bill Mitchell
Body and chassis
Body style	2-door hardtop
Layout	FR layout
Platform	E-body
Powertrain
Engine	401 cu in (6.6 L) Nailhead V8 425 cu in (7.0 L) Nailhead V8
Transmission	Twin Turbine Dynaflow automatic (1963) 3-speed TH-400 automatic (1964-1965)
Dimensions
Wheelbase	117.0 in (2,972 mm)
Length	208.0 in (5,283 mm)[7]
Width	76.3 in (1,938 mm)–76.6 in (1,946 mm)
Height	53.0 in (1,346 mm)

1964 Buick Riviera

1965 Buick Riviera GS

1965 Buick Riviera GS interior

The production Riviera was introduced on October 4, 1962, as a 1963 model, its distinctive bodyshell was unique to the marque, unusual for a GM product. The design was substantially the same as the original, less expensively hidden headlights concealed in the fender grilles.[5] The elegant ground-up styling sported the new "Coke bottle look" introduced the year before on the arresting Studebaker Avanti, with a tapered midsection surrounded by flaring fenders. There was no trace of the "Sweepspear" used on beltlines of earlier Buicks with the Riviera package.[8]

It rode a cruciform frame similar to the standard Buick frame, but shorter and narrower, with a 2.0 in (51 mm) narrower track. Its wheelbase of 117 in (3,000 mm) and overall length of 208 in (5,300 mm) were 6.0 inches (150 mm) and 7.7 in (200 mm) shorter, respectively, than a Buick LeSabre, but slightly longer than a contemporary Thunderbird. At 3,998 lb (1,813 kg),[9]^: 210 it was about 390 pounds (180 kg) lighter than either. It shared the standard Buick V8 engines, with a displacement of either 401 cu in (6.57 L) or 425 cu in (6.96 l), and the unique continuously variable design twin turbine automatic transmission. Power brakes were standard, using Buick's massive "Al-Fin" (aluminum finned) drums of 12 in (300 mm) diameter. Power steering was standard equipment, with an overall steering ratio of 20.5:1, giving 3.5 turns lock-to-lock.

The Riviera's suspension used Buick's standard design, with double wishbones in the front and a live axle located by trailing arms and a lateral track bar in the rear, but the roll centers were lowered to reduce body lean. Although its coil springs were actually slightly softer than other Buicks, the Riviera's lighter weight made its ride somewhat firmer. While still biased towards understeer, contemporary testers considered it one of the most driveable American cars, with an excellent balance of comfort and agility.

Buick's 325 hp (242 kW) 401 cu in (6.6 l) "Nailhead" V-8 was initially the only available engine,[9]^: 204 fitted with dual exhaust as standard equipment, and the turbine drive the only transmission.[9]^: 206 Base price was $4,333 ($38,816 in 2021 dollars [10]),[9]^: 210 running upwards of $5,000 delivered with typical options ($44,791 in 2021 dollars [10]). Buick announced an optional 340 hp (254 kW) 425 cu in (7.0 l) version of the Nailhead in December 1962. Total production was deliberately limited to 40,000 vehicles (in a year that Buick sold 440,000 units overall) to emphasize the Riviera's exclusivity and to increase demand; only 2,601 were delivered with the delayed availability larger engine in the 1963 model year.

With the same power as the bigger Buicks and less weight, the Riviera had improved all-around performance: Motor Trend recorded 0–60 mph (0–97 km/h) in 8 seconds or less, the standing quarter mile in about 16 seconds, and an observed top speed of 115 miles per hour (185 km/h). Fuel economy was a 13.2 miles per US gallon (17.8 L/100 km; 15.9 mpg_‑imp). Front leg room was 40.1 inches.[11]

Inside, the Riviera featured a luxurious four-place cabin with front bucket seats and bucket-style seats in the rear. A center console with a floor shifter and storage compartment built into the instrument panel divided the front. Upholstery choices included all-vinyl, cloth and vinyl, or optional leather. A deluxe interior option included real walnut inserts on the doors and below the rear side windows. Extra-cost options included a tilt steering wheel, power windows, power driver's seat, air conditioning, a remote-controlled side-view mirror, and white sidewall tires.

Minimal trim and mechanical changes were made for 1964, with the most identifiable distinguishing features being a raised stylized "R" hood emblem and "R" emblems replacing the Buick crests in the taillight lenses. The interior is distinguished by moving the heater controls from controls under the dashboard eyebrow to slide controls in the forward fairing of the center console. Leather was dropped as an option, and the Dynaflow twin-turbine transmission was replaced by a new three-speed Super Turbine 400. This was a GM Turbo Hydra-Matic. It used a two-speed "D" and 'L" selector, but could automatically downshift from third to second until the car reached a suitable speed to downshift to first. This was the first year of the stylized "R" emblem, a trademark that would continue throughout the remainder of Riviera's 36-year production run.[12] The engine was upgraded to the previously optional 340 hp (254 kW) 425 cu in (7.0 l) V8. A 360 hp (268 kW) 'Super Wildcat' version was available, with dual Carter AFB four-barrel carburetors.

1965 Buick Riviera

In 1965 the 401 cu in (6.6 l) V8 returned as the standard engine, and the "Gran Sport" version made its debut, powered by the Super Wildcat V8, a 360 hp engine equipped with two Carter 625 CFM carburetors, a distributor with different advance, and outfitted with a more aggressive 3.42 axle ratio. A heavy-duty suspension was the separate H2 option but was not part of the Gran Sport option. It offered a quicker ratio steering box and firmer rated springs. The Super Turbine 400 transmission now had a variable pitch torque converter, but was fitted with a three-speed gear selector. The Gran Sport stock dual exhaust pipes were increased from 2.0 inches (51 mm) to 2.25 inches (57 mm) inside diameter and had fewer turns to reduce backpressure. Externally, the headlamps, now vertically arranged, were hidden behind clamshell doors in the leading edges of each fender, as had been in the original design. The non-functional side scoops between the doors and rear wheel arches were removed, and the taillights moved from the body into the rear bumper.[13] A vinyl roof became available as an option, offered only in black, and the tilt steering wheel, optional in previous years, was now standard equipment.

Total sales for the 1963 through 1965 model years was 112,244. The Riviera was well received by the motoring press and considered a great success, giving the Thunderbird its first real competition as America's preeminent personal luxury car.

It has since earned Milestone status from the Milestone Car Society. Jaguar founder and designer Sir William Lyons remarked that Mitchell had done "a very wonderful job," and Sergio Pininfarina declared it "one of the most beautiful American cars ever built; it has marked a very impressive return to simplicity of American car design." At its debut at the Paris Auto Show, Raymond Loewy said the Riviera was the most handsome American production car—apart from his own Studebaker Avanti, in his view the Riviera's only real competition for 1963.[14] The first-generation Riviera is considered a styling landmark and has become a collectible car.[15]

1966 Buick Riviera GS

Second generation
1969 model (headlights deployed)
Overview
Model years	1966–1970
Assembly	Flint, Michigan Linden, New Jersey (Linden Assembly) United States
Body and chassis
Body style	2-door hardtop
Layout	FR layout
Platform	E-body
Related	Cadillac Eldorado Oldsmobile Toronado
Powertrain
Engine	425 cu in (7.0 L) Nailhead V8 430 cu in (7.0 L) Buick V8 455 cu in (7.5 L) Buick V8
Transmission	3-speed TH-400 automatic
Dimensions
Wheelbase	119.0 in (3,023 mm)[16]
Length	211.2 in (5,364 mm) (1966–67)[17] 215.2 in (5,466 mm) (1968–1970)
Width	78.8 in (2,002 mm) 79.3 in (2,014 mm) (1970)
Height	53.2 in (1,351 mm)–53.6 in (1,361 mm)

1968 Buick Riviera GS

1969 Buick Riviera

1970 Buick Riviera

The Riviera was redesigned for the 1966 model year.[18] It retained its cruciform X-frame, powertrain, and brakes, but its curvaceous new body was longer, wider, and 200 pounds (91 kg) heavier. Vent windows, a feature GM had introduced in the 1930s, were absent. Headlamps remained concealed, but now pivoted behind the grille when not in use, and they were once again horizontally arranged. The car's added bulk slowed acceleration with the unchanged 425 engine. The Gran Sport package remained available as an option. Rear seat belts[19] and AM/FM radio[20] were optional.

The new front-wheel drive Oldsmobile Toronado shared the Riviera platform, and, a year later, the also front-wheel drive Cadillac Eldorado; however, the Riviera itself retained the rear-wheel drive layout.

Inside, the four-place cabin with front and rear bucket seats and center console were replaced by a choice of bucket seats or conventional bench seats as standard equipment, making the Riviera a full six-passenger car for the first time. Optionally available was a Strato-bench seat with armrest or Strato bucket seats with either a short consolette or a full-length operating console with a "horseshoe" shaped floor shifter and storage compartment. Both the buckets and Strato-bench seat were available with a reclining seat option for the passenger's side. Sales for 1966 rebounded to 45,308, a new record.

The most significant change for 1967 was Buick's replacement of its venerable 425 "Nailhead" with an entirely new 430 cu in (7.0 L) V8. Its 360 horsepower (270 kW) and 475 lb⋅ft (644 N⋅m) of torque were a performance improvement. Gasoline mileage improved slightly, but remained low. Powerful disc brakes with Bendix four-piston calipers became optional for the front wheels but most Riviera continued to be ordered with Buick's highly capable ribbed aluminum brake drums. Cosmetically, changes were few and were limited to the addition of a wide, full-width, center-mounted horizontal chrome grille bar that stretched over the headlight doors and outboard parking lights. Sales eased to 42,799 for the 1967 model year. The Riviera had full instrumentation.[21]

1967 saw the introduction of U.S. mandated safety equipment to improve occupant protection during a crash, including an energy-absorbing steering column, non-protruding control knobs, 4-way hazard flasher, soft interior surfaces, locking seatbacks (on 2-door models), a dual-circuit hydraulic braking system (with warning light), and shoulder belt anchors. The Rivieras complied on all counts and featured the full range of safety features.

1968 models had reshaped loop-type bumpers that surrounded both the vehicle's recessed crosshatch front grille and tail lamps. Hidden wiper arms made their debut. Federally mandated side marker lights appeared, as inverted trapezoids on the lower leading edges of the front fenders, and circular in the rear. The interior was restyled and for the first time shared its instrument panel with the other full-size Buick models. Shoulder belts for front outboard occupants were made standard on all cars built from January 1, 1968. Mechanically, the transmission lost its variable pitch torque converter. A tilt steering wheel was standard.[22] Sales set another new record in 1968, as 49,284 units were sold.

Minor styling changes took place again in 1969, with grilles gaining a pattern of finely spaced, slim vertical bars overlaid by two wider horizontal bars, which jutted forward at their inboard edges. Front marker lights became far shorter and square. Inside, front outboard passengers received new headrests. The ignition switch was moved from the instrument panel to the steering column and locked the steering wheel and selector lever when the key was removed (a security feature that became mandatory for the 1970 model year). Chrome side trim was revised, as well. At the rear, the reverse lights moved from the rear bumper to new three-section tail-light lenses. Sales for 1969 improved again, to 52,872.

The 1970 Riviera was restyled, incorporating design cues from Bill Mitchell's 1968 "Silver Arrow II" concept car.[23] Exposed quad headlamps were nearly flush-mounted, while the new front bumper wrapped around and over the new vertical bar grille, set between the headlamp pods. A newly optional side trim feature accented the large coupe's flowing lines. Skirted rear wheels became standard, with exposed wheels an option. At the rear, a new rear bumper/taillight motif was seen. The engine was upgraded to 455 cu in (7.46 L), the largest engine Buick offered to date, rated at 370 horsepower (280 kW) gross, 245 hp (183 kW) net, and over 500 lb⋅ft (680 N⋅m) of torque. Despite the fact that 1970 sales dropped to 37,366, the second-generation Riviera proved more successful than the first, with 227,669 units sold over five the years.

Third generation
1972 Buick Riviera
Overview
Model years	1971–1973
Assembly	Flint, Michigan Linden, New Jersey (Linden Assembly) United States
Designer	Jerry Hirshberg under Bill Mitchell
Body and chassis
Body style	2-door hardtop
Layout	FR layout
Platform	E-body
Related	Cadillac Eldorado Oldsmobile Toronado
Powertrain
Engine	455 cu in (7.5 L) Buick V8
Transmission	3-speed TH-400 automatic
Dimensions
Wheelbase	122.0 in (3,099 mm)[24]
Length	217.4 in (5,522 mm) (1971) 218.3 in (5,545 mm) (1972) 223.4 in (5,674 mm) (1973)
Width	79.9 in (2,029 mm)
Height	54.0 in (1,372 mm)
Curb weight	4,247 lb (1,926 kg)

1971 Buick Riviera

1972 Buick Riviera rear

1971 Buick Riviera interior

V8 engine of a 1971 Buick Riviera

The Riviera was radically redesigned for the 1971 model year with flowing and dramatic "boat-tail" styling.[25] Designed under Bill Mitchell's direction, it was penned by Jerry Hirshberg, future head of design for Nissan, mating the two-piece vee-butted[9]^: 792 fastback rear window, inspired by the 1963 Corvette Sting Ray coupe, to the Riviera's platform.

The design was originally intended for the smaller A-body or its related G-body, as shown by a full scale clay model of an A-body based boat-tail Riviera recently revealed.[26] Given the late stage of the 1968-72 A/G platform evolution and accretive cost to add another version to it, GM Management decreed that the next Riviera use the full sized GM B platform body—expanded for 1971 by 3 in (76 mm) in wheelbase and more than 120 lb (54 kg) heavier— which produced controversial looks, making for a sharp departure from those of the Toronado and Eldorado. (Collectible Automobile ran an article about 1971–76 full-sized Buicks in which one sketch design for their 2-door coupes which was rejected resembled the 1971–73 Riviera).

This generation introduced a much more visual representation of the "sweepspear", with a more faithful representation to the version that appeared on 1950s Buicks in both the side molding and beltline.[27] Large, round wheel openings were intended to convey more of a sporty air.[27] The only engine available was Buick's own 455 ci V8 engine producing 315 hp (235 kW), with 330 hp (246 kW) with the Gran Sport (GS) package.[28]

The 455 engine had a lower compression ratio to meet EPA emissions requirements, together with the shift from SAE gross to SAE net ratings this reduced claimed power to 255 hp (190 kW), with 265 hp (198 kW) in the Gran Sport. Performance remained reasonably brisk, with a 0–60 mph time of 8.1 seconds for the GS, but the Riviera's sporty image was rapidly fading. One noteworthy advance was Buick's Max Trac limited-slip differential.[29] The 1971 Riviera also features GM's "Full-Flo" ventilation system and two large deck lid louvers are prominent on the trunk lid.

Despite these features, Riviera sales for 1971 dropped to 33,810,[9]^: 798 the lowest to date. The 1972 Riviera received a new, egg-crate grille, more substantial front bumpers to prepare for the new 5-mph impact legislation, restyled taillight trim, and the louvers were removed from the trunk lid. The 1972 Riviera also featured a redesigned ventilation system, and the 455 engine switched to net power ratings, 225 hp (168 kW) or 250 hp (186 kW) in the Gran Sport, although the actual drop in net power was only 5 hp (4 kW). Sales remained stagnant at 33,728, a drop of 82 from the prior year.[9]^: 876

For 1973, the Riviera underwent a number of changes.[30] The front bumper was redesigned to be thicker and featured bumper guards as standard in order to meet 1974 impact-bumper standards, the grille was switched back to horizontal slats, and the front lamps were moved from the bumper and were now integrated into the headlights, wrapping around the corners of the car. Sluggish sales of the third generation Riviera led GM to believe that the boattail deck lid was too radical for most customers' tastes, so in 1973 it was blunted and made slightly shorter. The taillights, meanwhile, were moved down from the sheet metal and into the bumper, and the rear license plate location was moved from the left side of the bumper to the center.[30] The 250 hp (186 kW) engine became standard, with 260 hp (194 kW) with the Stage One package. This also included a limited-slip differential and a chrome-plated air cleaner. The "Gran Sport" package was still available as a separate option package consisting of a ride-and-handling package that included a rear stabilizer bar, JR78-15 whitewall steel-belted radial tires, a specially tuned "radial roadability" suspension, additional sound insulation and special "Gran Sport" badging. The design changes however only led to a marginal increase in sales, with 34,080 being produced for the model year.

Fourth generation
Overview
Model years	1974–1976
Assembly	Flint, Michigan Linden, New Jersey (Linden Assembly) United States
Body and chassis
Body style	2-door coupe
Layout	FR layout
Platform	E-body
Related	Cadillac Eldorado Oldsmobile Toronado
Powertrain
Engine	455 cu in (7.5 L) Buick V8
Transmission	3-speed TH-400 automatic
Dimensions
Wheelbase	122.0 in (3,099 mm)
Length	226.4 in (5,751 mm) (1974) 223.0 in (5,664 mm) (1975)
Width	80.0 in (2,032 mm)
Height	54.0 in (1,372 mm)

Although carrying over the same platform, mechanicals, and some body panels seen on the "Third Generation" Riviera, Buick replaced its distinctive 'boat tail' roofline with a more conventional-looking "Colonnade" treatment which was more in line with its LeSabre and Electra brethren than its front-wheel drive cousins. This turned the car from a hardtop coupe into a pillared coupe, as it featured wide B pillars and fixed quarter opera windows. A landau half-vinyl roof option was available. The car did retain its forward-jutting grille, albeit in a slightly modified form. Thus modified, the car looked far less distinctive than its predecessors, and even its platform mates, the Oldsmobile Toronado and Cadillac Eldorado.

The tamer-looking Riviera was no lighter, and its standard 455 V8 lost more power, dropping to 230 hp (172 kW) and 245 hp (183 kW) for standard and Stage One models respectively. Max Trac was dropped from the option list after 1974 due to a lack of buyer interest. The revised styling did not improve sales, which fell to 20,129 in 1974, although it is impossible to determine how much this was a result of the energy crisis and how much was due to the tame appearance.[31] This generation introduced a novelty that later became federally mandated in a modified form, two high-mounted taillights above the trunk and below the rear window, which was shared on its platform twin the Toronado.

For 1975, the Riviera received an updated front fascia, which lost its forward-jutting theme through the redesign of the fiberglass front end cap. Quad rectangular headlights were mounted horizontally. The new vertical-bar grille echoed the "stand-up" theme that many GM cars of the day incorporated. Parking lights wrapped around the fender sides. The Stage One performance package was dropped for 1975, though the Gran Sport handling package would continue to be offered. The standard engine's output dipped to 205 hp (153 kW). Sales for 1975 were 17,306.

Minor changes greeted 1976 models, the most notable of which was a new crosshatch grille insert. The Gran Sport handling package was replaced by an 'S/R' package that had similar sporting pretensions. Sales rallied slightly to 20,082 for 1976.[32]

Fifth generation
Overview
Model years	1977–1978
Assembly	Flint, Michigan Linden, New Jersey (Linden Assembly) United States
Body and chassis
Body style	2-door coupe
Layout	FR layout
Platform	B-body
Related	Buick LeSabre Buick Estate Chevrolet Caprice Chevrolet Impala Oldsmobile 88 Oldsmobile Custom Cruiser Pontiac Bonneville/Parisienne Pontiac Catalina/Laurentian
Powertrain
Engine	350 cu in (5.7 L) Buick V8 403 cu in (6.6 L) Oldsmobile V8
Transmission	3-speed TH-400 automatic
Dimensions
Wheelbase	115.9 in (2,944 mm)
Length	218.2 in (5,542 mm)

1977 Buick Riviera

1978 Buick Riviera rear

Buick downsized the Riviera for 1977 onto the new smaller GM B platform. While the other E-bodies were front wheel drive since 1966 (1967 for Cadillac's Eldorado), the Buick E platform used a rear-wheel-drive B-body undercarriage (along with the cruciform frame of pre-1965 GMs for the 1966–70 generation). All B-bodies (including C and D platform GM RWDs) were downsized for the 1977 model year which prompted the short-lived 1977/78 generation.

It was, in most respects, a Buick LeSabre coupe with unique styling (with quarter windows mimicking the 1975–78 Cadillac Eldorado). Unlike its LeSabre counterpart, the front fascia is vertical as opposed to slanted. It was reduced to a wheelbase of 115.9 in (2,940 mm), down 6.1 in (150 mm), and an overall length of 218.2 in (5,540 mm), down 4.8 in (120 mm). Weight was reduced by appoximately 660 pounds (300 kg). The 455 engine was replaced by a 350 cu in (5.7 L) Buick V8 engine with 155 hp (116 kW) or an Oldsmobile-built 403 cu in (6.60 L) with 185 hp (138 kW). California models had a 170 hp (127 kW) Oldsmobile 350.[33]

Sales were up modestly to 26,138 for 1977 and then fell to 20,535 for 1978,[32] although this was a stopgap model until the all-new E-body cars would be ready for 1979. The 1977 and 1978 Rivieras were produced on the downsized GM B platform before the 1979 redesign on the FWD E-platform.

75th Anniversary Package

For 1978, a special "LXXV" edition was released to commemorate Buick's 75th anniversary on the market. Production total was 2,889 and included special silver & black paint with gray leather seats with black trim, four-wheel disc brakes, brushed chrome trim, deep pile carpeting, and special LXXV name plates.

The interior of a 1978 Buick Riviera LXXV

Production Figures

Buick Riviera Production Figures[34]

	Coupe
1977	26,138
1978	20,535
Total	46,673

Sixth generation
1984 Buick Riviera Coupe
Overview
Model years	1979–1985
Assembly	Linden Assembly, Linden, New Jersey United States
Body and chassis
Body style	2-door convertible 2-door coupe
Layout	Longitudinal front-engine, front-wheel drive
Platform	E-body
Related	Cadillac Eldorado Oldsmobile Toronado
Powertrain
Engine	231 cu in (3.8 L) Buick V6 231 cu in (3.8 L) Buick V6 Turbocharged 252 cu in (4.1 L) Buick V6 307 cu in (5.0 L) Oldsmobile V8 350 cu in (5.7 L) Oldsmobile V8 350 cu in (5.7 L) Oldsmobile diesel V8
Transmission	3-speed TH-325 automatic 4-speed THM325-4L automatic
Dimensions
Wheelbase	114.0 in (2,896 mm)[35]
Length	206.0 in (5,232 mm)
Width	72.8 in (1,849 mm)[35]

Buick Riviera coupe

The 1979 model year was the debut of the first front wheel drive Riviera, which was also the first front-drive production model in Buick history. Built on a 114 in (2,900 mm) wheelbase, it once again shared its mechanical design and platform with the Cadillac Eldorado and Oldsmobile Toronado. The Olds 403 and Buick 350 were dropped, but the Olds 350 remained, as did a new turbocharged Buick V6 engine of 231 cu in (3.8 L) displacement with 185 hp (138 kW) which was installed in the Riviera S-Type, shared with the Regal Sport Coupe turbo for model year 1980.[36] The Riviera became Motor Trend's Car of the Year. Sales more than doubled, to 52,181 for 1979 and 48,621 for the similar 1980 models.[33]

The 1983 Buick Riviera XX special edition

Rear view of 1984 Riviera convertible

1981 saw the Turbo renamed T-Type and the demise of the 350 engine in favor of the Oldsmobile-built 307 cu in (5.0 L) with 140 hp (104 kW) (phased in during the 1980 MY). The standard engine was now Buick's 125 hp (93 kW) 252 cu in (4.1 L) V6, and a new option was an Oldsmobile diesel engine with a mere 105 hp (78 kW) offered through 1985. 1982 also saw the first-ever Riviera convertible, although relatively few were built, owing to a high price - US$23,944 ($67,233 in 2021 dollars [10]).[36] The Riviera convertible was available in only two color choices-white or red firemist with the only interior color of red leather. A twin-turbocharged Riviera convertible was chosen to be the pace car at the 1983 Indianapolis 500, tuned to produce 410 hp (306 kW).[37] Most convertible Rivieras had the V8 engine, which saw an increase in rated SAE net HP to 150 for both convertibles and coupes fitted with it from 1982 through the 1985 model year.

In 1983 a special edition of 500 "Riviera XX" was offered, celebrating twenty years since the introduction of the first Riviera (502 were built in the end). These have a special two-tone exterior paint, real wire wheels, a leather, and walnut interior as well as 24-karat gold plated "Riviera XX" badging.[37] The Riviera XX also received a special grille, which then became part of the 1984 model year facelift model.[37] Overall sales made the 1980s Riviera a great success, reaching 65,305 for the 1985 model year.[32]

Production Figures

Seventh generation
Overview
Model years	1986–1993
Assembly	Detroit/Hamtramck Assembly, Michigan, United States
Body and chassis
Body style	2-door coupe
Layout	Transverse front-engine, front-wheel drive
Platform	E-body
Related	Cadillac Eldorado Oldsmobile Toronado Buick Reatta
Powertrain
Engine	1986: 3.8L 140 hp (100 kW) V6 1987: 3.8L 150 hp (110 kW) V6 1988–1990: 3.8L 165 hp (123 kW) V6 1991–93: 3.8L 170 hp (130 kW) V6
Transmission	4-speed THM440-T4 automatic
Dimensions
Wheelbase	108.0 in (2,743 mm)
Length	1986–88: 187.8 in (4,770 mm) 1989-93 198.3 in (5,037 mm)
Width	1986–88: 71.7 in (1,821 mm) 1989–93: 73.1 in (1,857 mm)
Height	1986–88: 53.5 in (1,359 mm) 1989–1990: 53.6 in (1,361 mm) 1991–93: 52.9 in (1,344 mm)
Curb weight	3,309 lb (1,501 kg)

Buick Graphic Control

The E-body coupes were converted to unibody construction and further downsized for 1986 to a 108 in (2,700 mm) wheelbase. The V6 was now the only engine, rated initially at 142 hp (106 kW) SAE and 200 lb⋅ft (270 N⋅m) of torque. It used the Turbo-Hydramatic 440-T4 automatic with a 2.84:1 final drive ratio.

This generation featured an advanced electronic instrumentation display on a dash-mounted 9-inch (230 mm) CRT. The CRT controlled the vehicle's climate control system and stereo, and also supplied advanced instrumentation such as a trip computer and maintenance reminder feature. Four-wheel disc brakes were standard. With a choice of three suspension packages available, up to the performance-oriented FE3 setting, handling was notably improved. The Riviera placed fourth for Motor Trend's 1986 Car of the Year contest. This generation saw the installation of Dynaride, which was an air compressor that would pressurize the rear Chapman Struts to maintain a level overall ride height. A badge was installed on the dashboard to the left of the steering column on all vehicles equipped. It was not available on vehicles equipped with Gran Touring Suspension.

1989–1993 Buick Riviera

Fuel economy was also notably improved for the 1986 Riviera but the investment in the downsized, transverse engine front wheel drive platform resulted in a substantial price increase to $19,831 ($49,024 in 2021 dollars [10]) for the base model and $21,577 for the T-Type ($53,340 in 2021 dollars [10]). The smaller exterior dimensions and lack of a V8 led to sales plummeting to 22,138 for 1986, 15,223 for 1987, and only 8,625 for 1988. 1988 also saw the introduction of Buick's new Reatta coupe, a two-seat personal luxury car.

The Riviera was restyled for 1989, adding 11 inches (280 mm) to the overall length (on an unchanged wheelbase). Sales improved to 21,189 for 1989, but dropped to a low of 4,555 for 1993, the abbreviated final model year of this generation.[32] The last 1993 Riviera rolled off the Detroit/Hamtramck Assembly plant line on December 10, 1992.

Production Figures:

Eighth generation
Overview
Production	May 23, 1994 – November 25, 1998
Model years	1995–1999
Assembly	Orion Township, Michigan, U.S.
Designer	William L. Porter
Body and chassis
Body style	2-door coupe
Layout	Transverse front-engine, front-wheel drive
Platform	G-body
Related	Oldsmobile Aurora Cadillac Seville Buick Park Avenue
Powertrain
Engine	3.8L 205 hp (153 kW) L36 Buick V6 3.8L 225 hp (168 kW) SC L67 Buick V6 3.8L 240 hp (180 kW) SC L67 Buick V6
Transmission	4-sp auto 4T60E (1995–96 N/A) 4-sp auto 4T60E-HD (1996 Supercharged) 4-sp auto 4T65E-HD (1997–99)
Dimensions
Wheelbase	113.8 in (2,891 mm)
Length	207.0 in (5,258 mm)
Width	75.0 in (1,905 mm)
Height	55.2 in (1,402 mm)
Curb weight	3,788 lb (1,718 kg)

After a hiatus in 1994, the Riviera returned in 1995 with radical styling that departed from the previous generations' traditional image. A 205 hp (153 kW) naturally aspirated 3800 V6 was standard, with a supercharged version rated at 225 hp (168 kW) and 275 lb⋅ft (373 N⋅m) available as an option. Rivieras were now built in Orion Township, Michigan, riding the same Cadillac-derived G platform as the 4-door Oldsmobile Aurora. The first of 41,422 Rivieras made in 1995 rolled off the assembly line on May 23, 1994.

In 1996, supercharged versions saw an increase in power to 240 hp (179 kW) and 280 lb·ft (380 N·m), as well as the 4T60E-HD transmission. 18,036 Rivieras were manufactured in 1996.

1997 saw suspension revisions, removing excess weight. An upgraded 4T65E-HD transmission featuring a larger 258 mm (10.2 in) torque converter and heavy-duty gearbox were added. 18,827 were made in 1997.

For 1998, the 240 hp (180 kW) supercharged V6 became standard. GM's OnStar service was added as an option, along with minor interior design changes and features including passenger heated seats. A total of 10,953 units were produced for 1998.

With sales of all coupes declining in the North American market, GM decided to discontinue the Riviera. 1999 was the car's last model year with production of 1,956 cars ceasing on November 25, 1998. The final 200 cars had special silver paint and trim, and were denoted "Silver Arrow"[40] models, a designation which hearkened back to several Silver Arrow show cars that had been built off Riviera bodies by Bill Mitchell.

Eighth-generation Rivieras received the most powerful V6 Buick engine since the Grand Nationals of the 1980s. The supercharged OHV V6 provided high torque and acceleration allowing 0 to 60 miles per hour (97 km/h) in under 7 seconds, and turning the 1⁄4 mile in 15.5 seconds. Supercharged Rivieras achieved a fuel efficiency figure of 18/27 (city/highway mpg).

Production Figures:

Works cited

• Gunnell, John, ed.: Standard Catalog of American Cars: 1946–1975, 4th ed., Iola, Wisconsin: Krause Publications, ISBN 978-0873494618
• Flammang, James M., ed.: Standard Catalog of American Cars: 1976–1999, 3rd ed., Iola, Wisconsin: Krause Publications, ISBN 978-0873417556

Wikimedia Commons has media related to Buick Riviera.

• Riviera Owners Association
• Riviera Performance — discussion board
• 1971–1973 Buick Riviera - Boattail — pictures and information