![B58Supra](https://upload.wikimedia.org/wikipedia/commons/1/11/B58Supra.jpg)
The
BMW B58 is a
turbocharged
In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...
straight-six engine
The straight-six engine (also referred to as an inline-six engine; abbreviated I6 or L6) is a piston engine with six cylinders arranged in a straight line along the crankshaft. A straight-six engine has perfect primary and secondary engine bala ...
, which began production in 2015. The B58 replaced the
N55 and was launched in the
F30 340i.
The B58 is part of BMW's new 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
Ward's is an American organization that has covered the automotive industry for over 80 years.
The organization is responsible for several publications including, ''Ward's AutoWorld'', and ''Ward's Dealer Business''. Ward's also publish the an ...
World's 10 Best Engines 4 times, in 2016 (installed in the
340i), 2017 (
M240i), 2019 (
X5) and 2020(
M340i).
The S58 engine, which was released in early 2019, is the high-performance version of the B58.
Design
Compared with its
BMW N55
The BMW N55 is a turbocharged straight-six petrol engine that began production in 2009. The N55 replaced the BMW N54 engine and was introduced in the F07 5 Series Gran Turismo.
The N55 was BMW's first straight-six engine to use a twin-scroll t ...
predecessor, the B58 features a 20% increase in boost pressure, a closed-deck
engine block
In an internal combustion engine, the engine block is the structure which contains the cylinders and other components. In an early automotive engine, the engine block consisted of just the cylinder block, to which a separate crankcase was atta ...
design, an increase in
compression ratio
The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values.
A fundamental specification for such engines, it is measured two ways: the stati ...
to 11.0:1 and a slight increase in
displacement
Displacement may refer to:
Physical sciences
Mathematics and Physics
*Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...
from with added weight of .
The
turbocharger
In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...
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
An intercooler is a heat exchanger used to cool a gas after compression. Often found in turbocharged engines, intercoolers are also used in air compressors, air conditioners, refrigeration and gas turbines.
Internal combustion engines
Mo ...
- a water-to-air design - is integrated into the intake plenum, to reduce the volume of air between the turbocharger and the cylinders.
As per the N55, the B58 also features direct fuel injection,
variable valve timing
In internal combustion engines, variable valve timing (VVT) is the process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with varia ...
(called
double Vanos by BMW), and
variable valve lift
Variable valve lift (VVL) is an automotive piston engine technology which varies the height a valve opens in order to improve performance, fuel economy or emissions. There are two main types of VVL: discrete, which employs fixed valve lift amounts, ...
(called
Valvetronic
The Valvetronic system is a BMW variable valve lift system which, in combination with VANOS, allows infinite adjustment of the intake valve timing and duration. The system claims to improve fuel economy and emissions, and negates the need for a ...
by BMW). The redline remains at 7,000 rpm, the
bore and the
stroke
A stroke is a medical condition in which poor blood flow to the brain causes cell death. There are two main types of stroke: ischemic, due to lack of blood flow, and hemorrhagic, due to bleeding. Both cause parts of the brain to stop functionin ...
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 new modular engine family, the
crankcase
In a piston engine, the crankcase is the housing that surrounds the crankshaft. In most modern engines, the crankcase is integrated into the engine block.
Two-stroke engines typically use a crankcase-compression design, resulting in the fuel/a ...
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 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.
Models
B58B30M0: 240 kW (322 HP) version
Applications:
*2015–2019
F30/F31/F34 340i
*2016–2019
F32/F33/F36 440i
*2016–2019
G11/G12 740i/Li
B58B30M0: 250 kW (335 HP) version
Applications:
*2016–2019
F20/F21 M140i
*2016–2021
F22/F23 M240i
*2017–2019
G30/G31 540i
*2017–2019
G32 640i
B58B30M0: 265 kW (355 HP) version
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 (335 HP)
Applications:
* 2018–present
G05 X5 xDrive40i/sDrive40i
* 2018–present
G07 X7 xDrive40i
* 2018–present
G29 Z4 M40i (in countries subject to EU emissions standards)
* 2020–present
G30/G31 540i
* 2020–present
G32 640i
* 2020–present
G06 X6 xDrive40i
* 2020–present
G11/G12 740i
* 2019–present
G14/G15/G16 840i
* 2019–present
Morgan Plus Six
The Morgan Plus Six is a sports car produced by the British car manufacturer Morgan.
History
After the Morgan Plus 8 was discontinued in 2018, Morgan presented the successor model, the Plus Six, based on a new glued aluminum platform at the 89th ...
* 2022–present
Ineos Grenadier
The Ineos Grenadier is an off-road utility vehicle designed and produced by Ineos Automotive Ltd. It went into production in July 2022. The Grenadier was designed to be a modern replacement of the original Land Rover Defender, with boxy bodywor ...
B58B30C: 250 kW (335 HP)
* 2020
Toyota Supra
is a sports car and grand tourer manufactured by the Toyota Motor Corporation beginning in 1978. The name "supra" is derived from the Latin prefix, meaning "above", "to surpass" or "go beyond".
The initial four generations of the Supra were pr ...
B58B30O1: 285 kW (382 HP)
Applications:
* 2018–present
G29 Z4 M40i (in countries not subject to EU emissions standards)
* 2019–present
G20
The G20 or Group of Twenty is an intergovernmental forum comprising 19 countries and the European Union (EU). It works to address major issues related to the global economy, such as international financial stability, climate change mitigation, ...
M340i
*2019–present
G21 M340i
* 2020–present
G01 X3 M40i
* 2019–present
G02 X4 M40i
* 2020–present
G22 M440i
* 2021–present
Toyota Supra
is a sports car and grand tourer manufactured by the Toyota Motor Corporation beginning in 1978. The name "supra" is derived from the Latin prefix, meaning "above", "to surpass" or "go beyond".
The initial four generations of the Supra were pr ...
(in countries not subject to EU emissions standards)
* 2021–present
G42 M240i
* 2021–present
Boldmen CR4
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
A stroke is a medical condition in which poor blood flow to the brain causes cell death. There are two main types of stroke: ischemic, due to lack of blood flow, and hemorrhagic, due to bleeding. Both cause parts of the brain to stop functionin ...
at . It also features a forged chrome molybdenum heat-treated steel crankshaft, plus forged steel connecting rods and 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
In internal combustion engines, variable valve timing (VVT) is the process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with varia ...
(called
double Vanos by BMW), and
variable valve lift
Variable valve lift (VVL) is an automotive piston engine technology which varies the height a valve opens in order to improve performance, fuel economy or emissions. There are two main types of VVL: discrete, which employs fixed valve lift amounts, ...
(called
Valvetronic
The Valvetronic system is a BMW variable valve lift system which, in combination with VANOS, allows infinite adjustment of the intake valve timing and duration. The system claims to improve fuel economy and emissions, and negates the need for a ...
by 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.
S58B30T0: 338 kW (453 HP)
* 2023–present
G87 M2
S58B30T0: 344 kW (462 HP)
* 2019-2022
G20
The G20 or Group of Twenty is an intergovernmental forum comprising 19 countries and the European Union (EU). It works to address major issues related to the global economy, such as international financial stability, climate change mitigation, ...
Alpina B3
S58B30T0: 353 kW (473 HP)
Applications:
* 2019–present
F97 X3 M
* 2019–present
F98 X4 M
* 2021–present
G80 M3
* 2021–present
G82 M4
S58B30T0: 364 kW (495 HP)
* 2023-present
G20
The G20 or Group of Twenty is an intergovernmental forum comprising 19 countries and the European Union (EU). It works to address major issues related to the global economy, such as international financial stability, climate change mitigation, ...
Alpina B3
S58B30T0: 375 kW (503 HP)
Applications:
* 2019–present
F97 X3 M Competition
* 2019–present
F98 X4 M Competition
* 2021–present
G80 M3 Competition
* 2021–present
G82 M4 Competition
References
{{BMW automotive petrol engines: 2000s to 2010s
BMW engines
Products introduced in 2015
Straight-six engines
Gasoline engines by model