Wikipedia

BMW B58

TheBMWB58is aturbochargedstraight-six engine,which began production in 2015.[1]The B58 replaced theN55and was launched in theF30340i.[2]

BMW B58
B58B30O1 in a G22 M440i
Overview
ManufacturerBMW
Production2015–present
Layout
ConfigurationStraight-six
Displacement3.0 L (2,998 cc)
Cylinder bore82 mm (3.23 in)
Piston stroke94.6 mm (3.72 in)
Cylinder blockmaterialClosed-deck aluminium
Cylinder headmaterialAluminum
ValvetrainDOHC4 valves x cyl.withValvetronicandDouble VANOS
Valvetrain drive systemChain
Compression ratio11.0:1
RPM range
Max. engine speed7,000 rpm
Combustion
Supercharger48V electrical systems Starter Generator (2020; some models)
TurbochargerSingletwin-scroll turbochargerwith air-to-liquidintercooler
FuelsystemDirect injection
ManagementBoschDi-Motronic
Fuel typePetrol
Oil systemWet sumpwith waterheat exchanger
Cooling systemWater-cooled
Output
Power output240–285 kW (322–382 hp)
Torque output450–500 N⋅m (332–369 lb⋅ft)
Dimensions
Dry weight139 kg (306 lb)
Chronology
PredecessorBMW N55

The B58 is part of BMW's modular engine family, each engine using a displacement of 500 cc (30.5 cu in) per cylinder, following theB38andB48engine.[3]

The B58 engine was named toWard'sWorld's 10 Best Enginesfour times, in 2016 (installed in the340i),[4]2017 (M240i),[5]2019 (X5)[6]and 2020(M340i).[7]

The S58 engine, which was released in early 2019, is the high-performance version of the B58.[8][9]It was named to Ward's World's 10 Best Engines in 2023 (installed in theM2).[10]

Design

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B58B30C in a2024 Ineos Grenadier

Compared with itsBMW N55predecessor, the B58 features a 20% increase in boost pressure, a closed-deckengine blockdesign, an increase incompression ratioto 11.0:1 and a slight increase indisplacementfrom 2,979 to 2,998 cc (181.8 to 182.9 cu in) with added weight of 8 kg (18 lb).

Theturbochargeris atwin-scrolldesign, for more efficient power delivery with less turbo lag and more power than a conventional single turbocharger, as well as for weight and space saving benefits.[11]Theintercooler- a water-to-air design - is integrated into the intake plenum, to reduce the volume of air between the turbocharger and the cylinders.[12][13]

As per the N55, the B58 also features direct fuel injection,variable valve timing(calleddouble Vanosby BMW), andvariable valve lift(calledValvetronicby BMW).[14][15]The redline remains at 7,000 rpm, theboreand thestrokeis 82 mm × 94.6 mm (3.23 in × 3.72 in).

The B58 also features an engine-mounted heat encapsulation system to reduce engine wear and emissions during start-up.[16]

For durability and longevity, the rotating assembly has a forged steel crankshaft and forged connecting rods.[17][18]

As a part of BMW's new modular engine family, thecrankcaseis a completely new design identical to theB57diesel version,[19]engineered as both a gasoline and diesel engine in one common part. The closed deck crankcase is equipped with a completely new structure which can be identified by a complex array of ribs on the exhaust and intake side and an additional reinforcement frame on the oil pump side.

The engine was revised in 2018, dubbed "B58TU", with notable changes and improvements. The fuel system was updated with 75% increased pressure with updated high pressure fuel pump and injectors, a new particulate filter in the catalytic converter, a new one-part timing chain as opposed to the earlier two-part, and new separate cooling circuits for the cylinder head and crankcase. For weight savings, the crankcase wall thickness and forged crankshaft were optimized, and the exhaust manifold was integrated into the cylinder head housing.[20]

Another engine revision in 2022 added port fuel injection to complement the existing direct injection system for better emissions and functionality.[21]

Models

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B58B30M0 in a F30 340i
Engine Power Torque Years
B58B30M0 213 kW (286 hp)
at 5,000-6,500 rpm		 400 N⋅m (295 lb⋅ft) 2022–present
240 kW (322 hp)
at 5,500–6,500 rpm		 450 N⋅m (332 lb⋅ft)
at 1,380–5,000 rpm		 2015–2019
250 kW (335 hp)
at 5,500 rpm		 500 N⋅m (369 lb⋅ft)
at 1,520–4,500 rpm		 2016–2021
250 kW (335 hp)
at 5,500-6,500 rpm		 450 N⋅m (332 lb⋅ft)
at 1,380–5,200 rpm		 2017–2019
B58B30M1 265 kW (355 hp)
at 5,500–6,500 rpm		 500 N⋅m (369 lb⋅ft)
at 1,520–4,800 rpm 		2016–2019
B58B30C 250 kW (335 hp)
at 5,000–6,500 rpm 		500 N⋅m (369 lb⋅ft)
at 1,600–4,500 rpm 		2018–
B58B30O1 285 kW (382 hp)
at 5,000–6,500 rpm
B58B30M2 280 kW (375 hp)
at 5,200-6,250 rpm 		520 N⋅m (384 lb⋅ft)
at 1850-5000 rpm 		2022-
S58B30T0 338 kW (453 hp)
at 6,250 rpm 		550 N⋅m (406 lb⋅ft)
at 2,600–5,950 rpm 		2023–
353 kW (473 hp)
at 6,250 rpm 		2020–
620 N⋅m (457 lb⋅ft)
at 2,600–5,950 rpm 		2019–
375 kW (503 hp)
at 6,250 rpm 		650 N⋅m (479 lb⋅ft)
at 2,600–5,950 rpm

B58B30M0: 213 kW (286 HP) version

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Applications:

  • 2023–presentG70735i (some markets)[22]

B58B30M0: 240 kW (322 HP) version

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Applications:

B58B30M0: 250 kW (335 HP) version

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Applications:

B58B30M0: 265 kW (355 HP) version

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This version was used for 3-/4-Series with the "M Performance Power and Sound Kit".

Applications:

B58B30M1: 250 kW (335 HP)

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Applications:

B58B30C: 250 kW (335 HP)

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B58B30O1: 285 kW (382 HP)

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Applications:

  • 2018–presentG29Z4 M40i (in countries not subject to EU emissions standards)
  • 2019–2024G20/G21M340i
  • 2020–2024G01X3 M40i
  • 2019–2024G02X4 M40i
  • 2020–presentG22/G23/G26M440i
  • 2021–presentToyota Supra[31](in countries not subject to EU emissions standards)
  • 2021–presentG42M240i
  • 2021–presentBoldmen CR4

B58B30M2: 280 kW (375 HP)

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  • 2022–presentG07X7 xDrive40i
  • 2023–presentG70740i
  • 2024–presentG05X5 xDrive40i
  • 2024–presentG06X6 xDrive40i
  • 2024–presentG60540i xDrive
  • 2025-presentG20/G21M340i
  • 2025–presentG45X3 M50[32]

S58

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BMW S58 engine
Overview
Production2019–present
Layout
ConfigurationStraight-six
Displacement3.0 L (2,993 cc)
Cylinder bore84mm(3.3in)
Piston stroke90mm(3.5in)
Cylinder blockmaterialClosed-deck aluminum
Cylinder headmaterialAluminum
ValvetrainDOHCw/VVT&VVL
Compression ratio9.3:1
RPM range
Max. engine speed7,200 RPM
Combustion
TurbochargerTwin-Turbowith air-to-liquid intercooler
FuelsystemDirect injection
Fuel typePetrol
Output
Power output338–417.59kW(453–560hp)
Torque output550–650 N⋅m (406–479 lb⋅ft)
Chronology
PredecessorBMW S55

The S58 engine is the high-performance version of the B58 engine. It was introduced in theF97 X3 MandF98 X4 M,marking the first time a stand-alone M model was produced for the X3 and X4.[33]

The S58 features twin mono-scroll turbochargers, a compression ratio of 9.3:1, a redline at 7,200 rpm with theboreand thestrokeat 84 mm × 90 mm (3.31 in × 3.54 in). It also features a forged chrome molybdenum heat-treated steel crankshaft, plus forged steel connecting rods and forged aluminum pistons. The pistons are forged byMahleand feature their proprietary anti-friction coating.[34]

Like the B58, the S58 also features direct fuel injection,variable valve timing(calleddouble Vanosby BMW), andvariable valve lift(calledValvetronicby BMW).

As opposed to the B58, the S58 features a slightly smaller displacement, increased bore, decreased stroke, and larger valves. Compression is decreased to 9.3:1 from 11.0:1. The S58 favors top-end power and has a higher redline of 7,200 RPM.[34]

S58B30T0: 338 kW (453 HP)

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  • 2023–2024G87M2

S58B30T0: 344 kW (461 HP)

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  • 2019–2022G20Alpina B3

S58B30T0: 355 kW (473 HP)

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Applications:

  • 2019–presentF97X3 M
  • 2019–presentF98X4 M
  • 2021–presentG80M3[35]
  • 2021–presentG82M4
  • 2025-presentG87M2 LCi

S58B30T0: 364 kW (488 HP)

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  • 2022–presentG26Alpina B4 Gran Coupe
  • 2023–presentG20Alpina B3

S58B30T0: 375 kW (502 HP)

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Applications:

  • 2019–presentF97X3 M Competition
  • 2019–presentF98X4 M Competition
  • 2021–presentG80M3 Competition
  • 2021–presentG82M4 Competition
  • 2022–presentG81M3 Competition Touring

S58B30T0: 405 kW (543 HP)

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Applications:

S58B30T0: 412 kW (552 HP)

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Applications:

  • 2023G82BMW 3.0 CSL

References

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  1. ^DeMattia, Nico (28 October 2015)."BMW's N55 engine will be missed, but the new B58 might be even better".BMWBlog.Retrieved20 May2016.
  2. ^"BMW F30 LCI 340i".www.paultan.org.Archivedfrom the original on 2016-06-10.Retrieved2016-05-20.
  3. ^Meiners, Jens (22 April 2011)."BMW's New Three-, Four-, and Six-Cylinder Engine Family Detailed".CARandDriver. Archived fromthe originalon 12 May 2016.Retrieved21 May2016.
  4. ^Murphy, Tom (10 December 2015)."Electrics Charge Up 10 Best Engines List".wardsauto.com.Archivedfrom the original on 13 January 2016.Retrieved16 May2020.
  5. ^Murphy, Tom (12 December 2016)."Seven Turbos, Three Hybrids Share Wards 10 Best Engines Honors".wardsauto.com.Archivedfrom the original on 13 December 2016.Retrieved16 May2020.
  6. ^Murphy, Tom (14 December 2018)."2019 Wards 10 Best Engines: Gasoline, Diesel, Electrification Honored".wardsauto.com.Archivedfrom the original on 13 December 2018.Retrieved16 May2020.
  7. ^Murphy, Tom (20 December 2019)."All-Inclusive List for 2020 Wards 10 Best Engines & Propulsion Systems".wardsauto.com.Archivedfrom the original on 20 December 2019.Retrieved16 May2020.
  8. ^"BMW F97 X3 M launching in 2019 with new S58 engine and 450 horsepower".www.bmwblog.com.13 March 2017.Retrieved28 December2017.
  9. ^"BMW Developing S58 Engine as S55 Successor, Will Debut in 2019 X3 M".www.autoevolution.com.18 March 2017.Archivedfrom the original on 29 December 2017.Retrieved28 December2017.
  10. ^"WardsAuto Names Wards 10 Best Engines & Propulsion Systems Winners for 2023"(PDF).WardsAuto.September 14, 2023.
  11. ^bimmertips (2018-08-15)."BMW TwinPower (Twin Scroll) Turbo System explained".BIMMERtips.com.Retrieved2022-12-14.
  12. ^"BMW's New B58 3-liter Engine Won't Be a Tuner's Delight".www.autoevolution.com.12 September 2015.Archivedfrom the original on 1 January 2018.Retrieved30 December2017.
  13. ^"BMW B58 FAQ - Maintenance, Problems, Tuning & More".bmwtuning.co.2020-09-25.Retrieved2022-12-14.
  14. ^"Big Changes Under Hood in '16 BMW 3-Series".www.wardsauto.com.15 October 2015.Archivedfrom the original on 1 January 2018.Retrieved30 December2017.
  15. ^"2017 BMW 2 Series Lineup Revealed with New Engines".www.automobilemag.com.17 May 2016.Archivedfrom the original on 31 December 2017.Retrieved30 December2017.
  16. ^Boeriu, Horatiu (11 December 2015)."BMW's B58 engine among Wards' 10 Best engines for 2016".BMWBlog.Retrieved21 May2016.
  17. ^Stoyanov, Aleksandar (2021-04-30)."Watch the First Teardown of the B58 Engine Powering the 2020 Supra and Z4".Automobile Fanatics.Retrieved2022-12-14.
  18. ^"How Much Power Can The BMW B58 Handle? - B58 Engine Limits".bmwtuning.co.2021-03-09.Retrieved2022-12-14.
  19. ^"How is the B58 engine (340i) improved from the venerable N55? We have answers".www.bimmerfest.com.Archivedfrom the original on 31 December 2017.Retrieved30 December2017.
  20. ^"BMW B58 vs B58TU - Technical Update - What Is the Difference?".bmwtuning.co.2020-02-09.Retrieved2022-12-14.
  21. ^"BMW B58 Inline Six Receives Second Technical Update".22 April 2022.
  22. ^https://www.bmw.co.id/en/all-models/7-series/sedan/2022/bmw-7-series-sedan-highlights.html[bare URL]
  23. ^Sheehan, Sam (16 May 2016)."New bmw m140i m240i and plug 7 series range revealed".autocar.co.uk.Archivedfrom the original on 20 May 2016.Retrieved22 May2016.
  24. ^BMW (24 September 2017)."BMW G30 5 series specifications".bmw.de.Archivedfrom the original on 24 September 2017.Retrieved24 September2017.
  25. ^BMW (12 June 2018)."M performance power and sound kit for 340i / 440i".www.bmw.de. Archived fromthe originalon 12 June 2018.Retrieved12 June2018.
  26. ^"BMW G01 X3 technical specifications".www.bmw.de.Archived fromthe originalon 2017-10-13.Retrieved2017-10-12.
  27. ^"The all-new BMW X5: The Prestige SAV with the most innovative technologies".www.press.bmwgroup.com.Archivedfrom the original on 2018-06-12.Retrieved2018-06-12.
  28. ^"2020 BMW Z4 M40i Prototype Driven: The Supra's German Brother".Car and Driver.Archivedfrom the original on 2018-06-12.Retrieved2018-06-12.
  29. ^"The Morgan Plus Six comes with Supra power".5 March 2019.Archivedfrom the original on 5 March 2019.Retrieved5 March2019.
  30. ^"2019 Toyota Supra engine deep dive: This isn't a 2JZ".Motor Authority.Archivedfrom the original on 28 August 2019.Retrieved28 August2019.
  31. ^"2019 Toyota Supra engine deep dive: This isn't a 2JZ".Motor Authority.Archivedfrom the original on 28 August 2019.Retrieved28 August2019.
  32. ^"2025 BMW X3 M50 Has an Upgraded B58B30M2 Engine".
  33. ^"The all-new BMW X3 M and the all-new BMW X4 M."www.press.bmwgroup.com.Archivedfrom the original on 2019-06-17.Retrieved2019-06-17.
  34. ^ab"BMW S58 Tuning Potential - The Most Capable BMW Engine Ever?".bmwtuning.co.2021-04-25.Retrieved2022-12-14.
  35. ^"A Closer Look At The Future BMW M3/M4 Engine – The S58".www.bmwblog.com.10 June 2019.Retrieved2019-06-17.
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