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B58B30M1B58B30C

B58TU 333-340 hp (B58B30M1, since 2018) engine: faults and reliability

BMW B58 3.0 de seis cilindros en línea turbo (B58B30) version

With caution

FCP Euro notes that the TU gives fewer PCV problems, but units built before 2021 may have the oil pump with a plastic housing, and the oil filter housing remains a part to watch.[1][2]

Years
since 2018
Power
333–340 hp
Faults that affect it
5
1 of high or critical severity
Cars that use it
8
in our database

6 sourcesHow we work

What changes in this version

2018 TU update: injection pressure raised from 200 to 350 bar, one-piece timing chain, petrol particulate filter, exhaust manifold integrated into the head and separate cooling of head and block; 340 hp (333 hp in some cars since 2020 according to German Wikipedia).[3][4]

Engine codes of this version: B58B30M1, B58B30C.

Faults of the B58B30M1 engine

The documented engine faults that affect this version and its years, from most to least important.

  1. 1High severityFrequency: OccasionalLubricationFailure of the oil pump with a plastic rotor housingB58s built before 2021 have an oil pump with a plastic rotor housing which, according to US press and retailers, can fail: abnormal oil pressure, a whine and warnings. It is cited on 2019-2020 M340i models without the ZTK package and on X5 and X7 models built before mid-2020.
  2. 2Medium severityFrequency: CommonLubricationOil and coolant leak from the plastic oil filter housingThe B58's plastic oil filter housing can crack or lose its seal with heat and age, letting oil, coolant or both escape. One parts retailer puts the failure between 60,000 and 100,000 miles (roughly 97,000-161,000 km).Appears at around 97,000 km
  3. 3Medium severityFrequency: CommonLubricationOil leak from the valve cover gasketThe rubber gasket on the B58's valve cover hardens with heat cycles and eventually leaks oil: a burning smell, smoke near the cover and oil on the spark plugs. Guides place it between 60,000 and 100,000 miles (97,000-161,000 km).Appears at around 97,000 km
  4. 4Medium severityFrequency: OccasionalCoolingCoolant loss from the cap or the expansion tankCoolant loss is one of the most repeated problems in B58 guides. Workshops first suspect the expansion tank cap and also check the intercooler tank, the pipes and the pump before thinking about the head gasket.
  5. 5Medium severityFrequency: OccasionalCoolingWater pump and thermostat module (thermal management) leakOn the B58 the water pump and the thermostat module (thermal management) can leak coolant, with a low-level warning and traces of fluid at the back of the engine. Guides place pump failures between 75,000 and 120,000 miles and module failures from around 40,000.Appears at around 120,000 km

Cars fitted with the B58B30M1 engine

Open each car to see all its faults with this engine and what to check before buying it.

BMW

Toyota

Frequently asked questions

Is the B58B30M1 engine reliable?

Our verdict is “With caution”. FCP Euro notes that the TU gives fewer PCV problems, but units built before 2021 may have the oil pump with a plastic housing, and the oil filter housing remains a part to watch.[1][2]

What faults does the B58B30M1 engine have?

The documented ones that affect this version, by importance: failure of the oil pump with a plastic rotor housing (high severity), oil and coolant leak from the plastic oil filter housing (medium severity), oil leak from the valve cover gasket (medium severity), coolant loss from the cap or the expansion tank (medium severity) and water pump and thermostat module (thermal management) leak (medium severity).

Which cars use the B58B30M1 engine?

BMW Serie 2 F22 (2016–2021), BMW Serie 5 G30 (2017–2023), BMW Serie 7 G11 (2015–2022), BMW X5 G05 (since 2018), BMW X6 G06 (since 2020), BMW X7 G07 (since 2018), BMW Z4 G29 (2019–2026) and Toyota GR Supra A90 (2019–2026).[3][4][5][6]

Are you buying a car with the B58B30M1 engine?

We will put you in touch with a partner only if you authorise it in the form.

Do you have a car with this engine? Tell us which faults you have had and at how many kilometres. Report your fault.

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. BMW B58 EngineFCP Euro · Technical documentation · consulted 9 October 2026
  2. The Popular BMW B58 Inline-Six Engine Has One Big Achilles HeelThe Autopian · Motoring press · published 14 June 2024 · consulted 9 October 2026
  3. BMW B58Wikipedia (inglés) · Other source · consulted 9 October 2026
  4. BMW B58Wikipedia (alemán) · Other source · consulted 9 October 2026 · in German
  5. BMW Z4 (G29)Wikipedia (inglés) · Other source · consulted 9 October 2026
  6. Toyota GR SupraWikipedia (inglés) · Other source · consulted 9 October 2026