BMW B48

The BMW B48 is a turbocharged inline-four petrol engine which replaced the BMW N20 and has been in production since 2014. It was first used in the F56 Mini Hatch and has been used in BMW applications since 2015.

BMW B48
Overview
ManufacturerBMW
Production2014–present
Layout
ConfigurationInline-four
Displacement1,597 cc (97 cu in)
1,998 cc (122 cu in)
Cylinder bore82.0 mm (3.23 in)
Piston stroke75.6 mm (2.98 in)
94.6 mm (3.72 in)
ValvetrainDOHC
Valvetrain drive systemChain
Compression ratio8.9:1
11:1
Combustion
TurbochargerSingle twin-scroll
Fuel systemDirect injection
Fuel typePetrol
Chronology
PredecessorBMW N20
B48 in a 2019 BMW 125i, dual circulation cooling system with water-cooled intercooler
B48 in a 2014 MINI Cooper S

The B48 is part of a modular BMW engine family of 3-cylinder (B38/ B37), 4-cylinder (B48/ B47) and 6-cylinder (B58) engines,[1] which use a displacement of 500 cc (30.5 cu in) per cylinder.

Design

Compared with its N20 predecessor, the B48 uses a more undersquare design, and engine block in "closed-deck construction".[2] As per the N20, the block and head are made from aluminium.[3] Other features shared with the N20 include a twin-scroll turbocharger, direct injection, variable valve lift (Valvetronic) and variable valve timing (Double VANOS).[4]

Models
Engine PowerTorqueYears
B48B16 1,597 cc (97 cu in) 125 kW (168 hp)
at 5,000–6,000 rpm		250 N⋅m (184 lb⋅ft)
at 2,000–4,700 rpm		2017–
B48B20 1,998 cc (122 cu in) 115 kW (154 hp)
at 4,500–6,500 rpm		250 N⋅m (184 lb⋅ft)
at 1,300–4,300 rpm		2020–
B48A20U1 131 kW (176 hp)

at 5,000–5,500 rpm

 280 N⋅m (207 lb⋅ft)

at 1,350–4,200 rpm

B48B20M0 135 kW (181 hp)
at 5,000–6,500 rpm		270 N⋅m (199 lb⋅ft)
at 1,350–4,600 rpm		2016–
135 kW (181 hp)
at 5,000–6,500 rpm		 290 N⋅m (214 lb⋅ft)
at 1,350–4,250 rpm
B48A20M1 141 kW (189 hp)
at 5,000–6,500 rpm		 280 N⋅m (207 lb⋅ft)
at 1,250–4,600 rpm		 2014–
141 kW (189 hp)
at 4,700–6,000 rpm		 280 N⋅m (207 lb⋅ft)
at 1,250–4,750 rpm
141 kW (189 hp)
at 5,000–6,000 rpm		 280 N⋅m (207 lb⋅ft)
at 1,350–4,600 rpm
195 kW (261 hp)
at 5,000–6,000 rpm		 400 N⋅m (295 lb⋅ft)
at 1,350–4,600 rpm
B48B20M1 145 kW (194 hp)
at 4,500–6,600 rpm		320 N⋅m (236 lb⋅ft)
at 1,450–4,200 rpm		2019–
B48B20O1 165 kW (221 hp)
at 5,000–6,500 rpm		310 N⋅m (229 lb⋅ft)
at 1,400–5,000 rpm		2016–
B48A20O1 170 kW (228 hp)
at 5,000–6,000 rpm		350 N⋅m (258 lb⋅ft)
at 1,250–4,500 rpm		2015–
170 kW (228 hp)
at 5,200–6,200 rpm		 300 N⋅m (221 lb⋅ft)
at 1,250–4,800 rpm
170 kW (228 hp)
at 5,000–6,000 rpm		 350 N⋅m (258 lb⋅ft)
at 1,450–4,500 rpm
B48O1ZIK 180 kW (241 hp)
at 4,500–6,500 rpm		 400 N⋅m (295 lb⋅ft)
at 1,600–4,000 rpm
B48B20O0 185 kW (248 hp)
at 5,200–6,500 rpm		350 N⋅m (258 lb⋅ft)
at 1,450–4,800 rpm		 2015–
B48B20O1 190 kW (255 hp)
at 5,000–6,500 rpm		400 N⋅m (295 lb⋅ft)
at 1,550–4,400 rpm		2016–
B48A20T1 225 kW (302 hp)
at 5,000–6,250 rpm		450 N⋅m (332 lb⋅ft)
at 1,750–4,500 rpm		2019–

115 kW version
  • 2020-present G20 318i
  • 2022-present G42 218i

125 kW version
  • 2019-present G20 320i (Turkish and Tunisian market)
  • 2020-present G22 420i (Turkish market)
  • 2021-present G26 420i (Turkish market)
  • 2017-present G30 520i (Turkish and Tunisian market)
  • 2018-present G01 X3 sdrive20i (Turkish market)

131 kW version
  • 2021–present F54 MINI Cooper S Clubman (B48A20M)
  • 2020-present F40 BMW 120i

135 kW version

When combined with the electric motor, the 330e and 530e overall output is 185 kW (248 hp) and 420 N⋅m (310 lb⋅ft)[5] [6]

  • 2016–2019 F20 120i
  • 2016–2019 F22/F23 220i
  • 2015–2019 F30/F31/F34 320i
  • 2016–2019 F30 330e
  • 2016-2019 F33/F36 420i
  • 2017–present G30/G31 520i
  • 2018-present G30/G31 530e
  • 2018–present G01 X3 xDrive20i
  • 2018–present G02 X4 xDrive20i
  • 2019–present G20 320i
  • 2019–present G20 330e
  • 2020-present G22 420i
  • 2021-present G42 220i

141 kW version
  • 2017–2020 F60 MINI Cooper S Countryman
  • 2014–2017 F45 BMW 2 Series Active/Gran Tourer 220i

145 kW version

In the MINI Cooper S, a temporary overboost increases peak torque by 20 N⋅m (15 lb⋅ft) to 300 N⋅m (221 lb⋅ft).[7]

  • 2014–present F56 MINI Cooper S[8] (B48A20A)
  • 2020–present F44 220i Gran Coupe
  • 2016–present F48 X1 20i
  • 2017–present F39 X2 sDrive20i
  • 2018–present G29 Z4 sDrive20i
  • 2019–present J29/DB82 Toyota Supra (Japanese SZ models)

165 kW version
  • 2016–2019 F20 125i
  • 2021–present U06 223i

170 kW version
  • 2014–present F56 MINI JCW Hardtop and JCW Cabrio (320 Nm)[9]
  • 2017–present F56 MINI JCW Clubman and JCW Countryman ALL4 (350 Nm)
  • 2015–present F45 Active Tourer 225i
  • 2016–present F48 X1 25i/28i
  • 2017–present F39 X2 25i/28i
  • 2019–current F44 228i Gran Coupé xDrive

180 kW version
  • 2022-present G42 230i
  • 2022–present G20/G21 330i
  • 2022–present G22 430i
  • 2023–present U11 X1 28i xDrive

185 kW version

190 kW version
  • 2016–present G11 730i/730Li
  • 2017–2019 G11 740e xDrive/740Le xDrive[11] (combined with an 82 kW electric motor for a total output of 240 kW)
  • 2017–2021 G32 630i
  • 2019–2022 G20/G21 330i
  • 2019-present G29 Z4 sDrive30i
  • 2019–present J29/DB22 Toyota Supra
  • 2020-present Morgan Plus Four
  • 2020–present G22 430i

195 kW version

225 kW version

This engine features a reinforced crankshaft with larger main bearings and new pistons with a lower 9.5:1 compression ratio. This allows the engine to take more boost pressure from a larger turbocharger, which blows compressed air through a reworked intake tract.[12] Revealed in May 2019, this engine is shared with the New F40 M135I Xdrive new And F44 M235I Xdrive grand coupe And MINI Countryman JCW, Clubman JCW[13] and JCW GP models.[14] The engine has output increased by 55 kW (74 hp) to 225 kW (302 hp) and torque increased to 450 N⋅m (332 ft⋅lb).

  • 2019–present F40 M135i xDrive
  • 2019–present F44 M235i xDrive Gran Coupé
  • 2019–present F39 X2 M35i xDrive
  • 2019–present F54 Clubman JCW
  • 2019–present F60 Countryman JCW
  • 2020–present F56 MINI John Cooper Works GP
  • 2024–present U11 X1 M35I xDrive

References
  1. "BMW modular engines: B37, B38, B47 and B48". www.bmwblog.com. 21 May 2014. Archived from the original on 6 October 2021. Retrieved 10 May 2017.
  2. "Watch out for the B's – Comparing the upcoming B48 2.0 liter turbo four-cylinder to the N20 it will replace". www.bimmerboost.com. Archived from the original on 15 June 2017. Retrieved 10 May 2017.
  3. "2016 BMW X1 first drive review". www.caranddriver.com. 16 July 2015. Archived from the original on 9 May 2017. Retrieved 10 May 2017.
  4. "BMW B48 Four Cylinder Turbocharged Engines".
  5. "Build Your Own Car: Luxury Car Customizer by BMW USA". Archived from the original on 2017-04-29. Retrieved 2017-03-27.
  6. "Build Your Own Car: Luxury Car Customizer by BMW USA". Archived from the original on 2021-10-06. Retrieved 2019-04-13.
  7. "BMW's new B48 2.0 litre four-cylinder TwinPower Turbo engine to produce up to 255 hp and 400 Nm". www.paultan.org. 24 February 2014. Archived from the original on 14 August 2017. Retrieved 16 May 2017.
  8. "MINI's Prince Engine is Dead- enter the B37 & B48". www.motoringfile.com. 5 September 2013. Archived from the original on 14 January 2016. Retrieved 16 May 2017.
  9. "Future Mini JCW models to get new 230bhp petrol engine". Archived from the original on 2014-07-06. Retrieved 2014-07-03.
  10. "The new 2017 BMW 2 Series now featuring the latest generation of BMW TwinPower Turbo engines". Press.bmwgroup.com. 2017-05-17. Archived from the original on 2017-09-13. Retrieved 2017-09-01.
  11. "2017 BMW 740e xDrive Plug-In Hybrid". www.caranddriver.com. 22 July 2016. Archived from the original on 31 July 2017. Retrieved 31 July 2017.
  12. Nishimoto, Alex (7 September 2018). "2019 BMW X2 M35i Debuts With 302-HP Turbo-Four". Motor Trend. Archived from the original on 1 October 2020. Retrieved 9 April 2020.
  13. Bode, Matthias; Lampka, Andreas (15 May 2019). "The new MINI John Cooper Works Clubman and the new MINI John Cooper Works Countryman". BMW Group. Archived from the original on 6 October 2021. Retrieved 9 April 2020.
  14. Bode, Matthias; Lampka, Andreas (20 November 2019). "The new MINI John Cooper Works GP". BMW Group. Archived from the original on 23 March 2020. Retrieved 9 April 2020.
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