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BMW B58 vs 1.8 TCe: which engine is more reliable?

According to our risk index, the 1.8 TCe carries less risk than the BMW B58: 32/100 versus 38/100 (both moderate risk). The BMW B58 has 1 documented serious fault, the main one being «Failure of the oil pump with a plastic rotor housing»; the 1.8 TCe has 2 documented serious faults, the main one being «A110 oil pressure solenoid valve sticking in 2018–2019 cars».

Risk index

BMW B58

38

Moderate risk · 1 serious fault

Risk index

1.8 TCe

32

Moderate risk · 2 serious faults

Lower risk

The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated

13 sourcesHow we work

Is the BMW B58 reliable?

The B58 (3.0 turbo straight-six, since 2015) is considered robust and less troublesome than the N54/N55 it replaced, and the sources do not document widespread internal failures. The known faults are on the periphery: the plastic oil filter housing, crankcase ventilation, gaskets and coolant. On units built before 2021 there are also US reports of an oil pump with a plastic housing.[1][2][3][4]

See the 6 of the BMW B58 faults

Is the 1.8 TCe reliable?

The 1.8 TCe (M5P) in the Alpine A110 and the Mégane R.S. IV has no documented endemic faults. What has been published are recalls for the A110: the oil pressure solenoid valve (2019) and the fuel pump (2021 and 2023). We have found no recalls or complaints about this engine in the Mégane R.S.[5][6][7][8]

See the 2 of the 1.8 TCe faults

Side-by-side comparison

Comparison of BMW B58 and 1.8 TCe
BMW B581.8 TCe
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement2,998 cm³1,798 cm³
TimingChain—
Power290–441 hp252–350 hp
Productionsince 2015[9][10]2017–2026[8][11][12]
Reliability
Risk index (what is it?)38Moderate risk32Moderate risk
Documented faults62
Of high or critical severity12
Worst severityHigh severityHigh severity
Main faults
  1. High severity: Failure of the oil pump with a plastic rotor housing
  2. Medium severity: Oil and coolant leak from the plastic oil filter housing
  3. Medium severity: Failure of the crankcase ventilation PCV valve (integrated in the valve cover)
  1. High severity: A110 oil pressure solenoid valve sticking in 2018–2019 cars
  2. High severity: A110 fuel pump that can leave the car unable to start when hot
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versions
  • B58TU2 381 hp (B58B30M2, since 2022)[2][3]
  • 1.8 TCe 280–300 hp (M5P, Mégane R.S. IV, 2018–2023)[5][7][8]
With cautionVersions to be cautious about
  • B58 326 hp (B58B30M0, 2015-2019)[2][3][13]
  • B58 340-360 hp (B58B30M0, 2016-2019)[2][3][13]
  • B58TU 333-340 hp (B58B30M1, since 2018)[2][3]
  • B58TU 374 hp (B58B30O1, M340i, M440i and M240i, since 2019)[3]
  • 1.8 TCe 252–350 hp (M5P, Alpine A110, 2017–2026)[5][7]
AvoidVersions to avoidNoneNone

Severity of each fault: green, low; amber, medium; red, high; dark red, critical. How we rate them

Cars that each one is fitted to

BMW B58

See the 16 models with the BMW B58

1.8 TCe

Other comparisons

With the BMW B58

With the 1.8 TCe

Compare other engines

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Sources

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

  1. The 5 Most Common BMW B58 Engine ProblemsBMW Tuning · Technical documentation · published 7 February 2020 · consulted 9 October 2026
  2. BMW B58 EngineFCP Euro · Technical documentation · consulted 9 October 2026
  3. The Popular BMW B58 Inline-Six Engine Has One Big Achilles HeelThe Autopian · Motoring press · published 14 June 2024 · consulted 9 October 2026
  4. ¿En qué se diferencian los motores B58 y S58 de BMW?Diariomotor · Motoring press · published 27 April 2024 · consulted 9 October 2026 · in Spanish
  5. Rappels Alpine A110 (2019). Risque de casse moteurL'argus · Motoring press · published 28 August 2019 · consulted 31 October 2026 · in French
  6. Rappel Alpine A110. La pompe à essence de 2 849 exemplaires remplacéeL'argus · Motoring press · published 7 September 2021 · consulted 31 October 2026 · in French
  7. Alpine A110. Un nouveau rappel pour remplacer des pompes à essenceL'argus · Motoring press · published 25 October 2023 · consulted 31 October 2026 · in French
  8. Renault Mégane IVWikipedia (fr) · Other source · consulted 31 October 2026 · in French
  9. BMW B58Wikipedia (inglés) · Other source · consulted 9 October 2026
  10. BMW B58Wikipedia (alemán) · Other source · consulted 9 October 2026 · in German
  11. Alpine A110 (2017)Wikipedia (en) · Other source · consulted 31 October 2026
  12. Alpine A110 (2017)Wikipedia (fr) · Other source · consulted 31 October 2026 · in French
  13. How A Plastic Part On BMW's B58 Engine Can Turn An Oil Change Into A $3,000 RepairThe Autopian · Motoring press · published 28 March 2025 · consulted 9 October 2026