BMW B58


The BMW B58 is a turbocharged straight-six engine, which began production in 2015. The B58 replaced the N55 and was launched in the F30 340i.
The B58 is part of BMW's modular engine family, each engine using a displacement of per cylinder, following the B38 and B48 engine.
The B58 engine was named to Ward's World's 10 Best Engines five times, in 2016, 2017, 2019 2020,. and 2024
The S58 engine, which was released in early 2019, is the high-performance version of the B58. It was named to Ward's World's 10 Best Engines in 2023.

Design

Compared with its BMW N55 predecessor, the B58 features a 20% increase in boost pressure, a closed-deck engine block design, an increase in compression ratio to 11.0:1 and a slight increase in displacement from with added weight of.
The turbocharger is a twin-scroll design, 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. The intercooler - a water-to-air design - is integrated into the intake plenum, to reduce the volume of air between the turbocharger and the cylinders.
The B58, like its predecessor the N55, features direct fuel injection, variable valve timing, and variable valve lift. The redline remains at 7,000 rpm, the bore and the stroke is.
The B58 also features an engine-mounted heat encapsulation system to reduce engine wear and emissions during start-up.
For durability and longevity, the rotating assembly has a forged steel crankshaft and forged connecting rods.
As a part of BMW's modular engine family, the crankcase is a completely new design identical to the B57 diesel version, 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 located on the exhaust system's midpipe, 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.
Another engine revision in 2022 added port fuel injection to complement the existing direct injection system for better emissions and functionality.

Models

EnginePowerTorqueYears
B58B30M0
at 5,000-6,500 rpm		2022–present
B58B30M0
at 5,500–6,500 rpm
at 1,380–5,000 rpm		2015–2019
B58B30M0
at 5,500-6,500 rpm
at 1,380–5,200 rpm		2017–2019
B58B30M0
at 5,500 rpm
at 1,520–4,500 rpm		2016–Present
B58B30M0
at 5,500-6,500 rpm
at 1,520–4,800 rpm		2016–2019
B58B30M1
at 5,500–6,500 rpm
at 1,520–4,800 rpm		2018–
B58B30C
at 5,000–6,500 rpm
at 1,600–4,500 rpm		2018–
B58B30O1
at 5,000–6,500 rpm
at 1,600–4,500 rpm		2018–
B58B30O1
at 6,000 rpm
at 4,500 rpm		2025–
B58B30M2
at 5,200-6,250 rpm
at 1850-5000 rpm		2022-
S58B30T0
at 6,250 rpm
at 2,600–5,950 rpm		2023–
S58B30T0
at 6,250 rpm
at 2,600–5,950 rpm		2020–
S58B30T0
at 6,250 rpm
at 2,600–5,950 rpm		2019–
S58B30T0
at 6,250 rpm
at 2,600–5,950 rpm		2019–

B58B30M0: 213 kW (290 PS; 286 hp)

Applications:
  • 2023–present G70 735i
  • 2021–present G30 545e
  • 2022–present Ineos Grenadier

    B58B30M0: 240 kW (326 PS; 322 hp)

Applications:
Applications:
This version was used for 3-/4-Series with the "M Performance Power and Sound Kit".
Applications:
  • 2016–2019 F30/F31/F34 340i
  • 2016–2019 F32/F33/F36 440i
  • 2017–2019 G01 X3 M40i
  • 2018–2019 G02 X4 M40i

    B58B30M1: 250 kW (340 PS; 335 hp)

Applications:
  • 2018–2023 G05 X5 xDrive40i/sDrive40i
  • 2018–2023 G07 X7 xDrive40i
  • 2019–2026 G29 Z4 M40i
  • 2019–present Toyota GR Supra
  • 2019–2026 G14/G15/G16 840i
  • 2020–2023 G30/G31 540i
  • 2020–2023 G32 640i
  • 2020–2023 G06 X6 xDrive40i
  • 2020–2022 G11/G12 740i

    B58B30C: 250 kW (340 PS; 335 hp)

Applications:
Applications:
  • 2019–2026 G29 Z4 M40i
  • 2019–2024 G20/G21 M340i
  • 2020–2024 G01 X3 M40i
  • 2019–2024 G02 X4 M40i
  • 2021–present G22/G23/G26 M440i
  • 2021–present Toyota Supra
  • 2021–present G42 M240i
  • 2021–present Boldmen CR4

    B58B30O1: 324 kW (441 PS; 434 hp)

Applications:
  • 2025 Toyota Supra A90 Final Edition

    B58B30M2: 285 kW (381 PS; 375 hp)

Applications:
  • 2022–present G07 X7 xDrive40i
  • 2023–present G70 740i
  • 2024–present G05 X5 xDrive40i
  • 2024–present G06 X6 xDrive40i
  • 2024–present G60 540i xDrive
  • 2025–present G20/G21 M340i
  • 2025–present G45 X3 M50

    B58B30M2: 293 kW (398 PS; 393 hp)

Applications:
  • 2025–present G45 X3 M50

    S58

The S58 engine is the high-performance version of the B58 engine. It was introduced in the F97 X3 M and F98 X4 M, marking the first time a stand-alone M model was produced for the X3 and X4.
The S58 features twin mono-scroll turbochargers, a compression ratio of 9.3:1, a redline at 7,200 rpm with the bore and the stroke at. It also features a forged chrome molybdenum heat-treated steel crankshaft, plus forged steel connecting rods and forged aluminum pistons. The pistons are forged by Mahle and feature their proprietary anti-friction coating.
Like the B58, the S58 also features direct fuel injection, variable valve timing, and variable valve lift.
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.

S58B30T0: 338 kW (460 PS)

  • 2023–2024 G87 M2

    S58B30T0: 344 kW (468 PS)

  • 2019–2022 G21 Alpina B3

    S58B30T0: 353 kW (480 PS)

Applications:
  • 2019–2024 F97 X3 M
  • 2019–2024 F98 X4 M
  • 2021–present G80 M3
  • 2021–present G82 M4
  • 2025–present G87 M2

    S58B30T0: 364 kW (495 PS)

  • 2022–present G26 Alpina B4 Gran Coupe
  • 2023–present G20 Alpina B3

    S58B30T0: 375 kW (510 PS)

Applications:
  • 2019–present F97 X3 M Competition
  • 2019–present F98 X4 M Competition
  • 2021–present G80 M3 Competition
  • 2021–present G82 M4 Competition
  • 2022–present G81 M3 Competition Touring

    S58B30T0: 389 kW (529 PS)

Applications:
Applications:
  • 2025-Present G80 M3 Competition xDrive
  • 2025-Present G81 M3 Competition Touring xDrive
  • 2025-Present G82 M4 Competition xDrive
  • 2026-Present G87 M2 CS

    S58B30T0: 405 kW (550 PS)

Applications:
  • 2022 G82 M4 CSL
  • 2023 G80 M3 CS
  • 2024 G82 M4 CS
  • 2025 G81 M3 CS Touring

    S58B30T0: 412 kW (560 PS)

Applications: