M50 and M52 vs 1.5 VC-Turbo e-Power: which engine is more reliable?

According to our risk index, the 1.5 VC-Turbo e-Power carries less risk than the M50 and M52: 36/100 (moderate risk) versus 52/100 (high risk). The M50 and M52 has 2 documented serious faults, the main one being «Cooling system failure (expansion tank, thermostat, pump and radiator)»; the 1.5 VC-Turbo e-Power has 3 documented serious faults, the main one being «Safe mode due to battery controller calibration (loss of propulsion)».

Risk index

M50 and M52

High risk · 2 serious faults

Risk index

1.5 VC-Turbo e-Power

Moderate risk · 3 serious faults

Lower risk

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

Reviewed on 2 November 202617 sources How we work

Is the M50 and M52 reliable?

The M52 and its predecessor the M50 are six-cylinder petrol engines that the sources describe as durable: Enginescope considers 300,000 km routine with the cooling circuit looked after. Watch the plastic cooling parts, VANOS, crankcase ventilation and oil leaks and, in the aluminium-block M52s built from 1995 to March 1998, cylinder wear caused by sulphur (Nikasil).^[1][2][3]

See the 5 of the M50 and M52 faults

Is the 1.5 VC-Turbo e-Power reliable?

There is still little reliability data: the three-cylinder 1.5 VC-Turbo only generates electricity and no mechanical faults are known in Europe. The documented weak points are in the e-Power electronics: battery campaigns and isolated cases of immobilisation.^[4][5][6]

See the 4 of the 1.5 VC-Turbo e-Power faults

Side-by-side comparison

Comparison of M50 and M52 and 1.5 VC-Turbo e-Power
Item	M50 and M52	1.5 VC-Turbo e-Power
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	—	1,497 cm³
Timing	Chain	—
Power	150–193 hp	190–213 hp
Production	1990–2001^{[7][8][9][10]}	since 2022^{[11][12][13][14]}
Reliability
Risk index (what is it?)	52High risk	36Moderate risk
Documented faults	5	4
Of high or critical severity	2	3
Worst severity	Critical severity	High severity
Main faults	High severity: Cooling system failure (expansion tank, thermostat, pump and radiator) Critical severity: Premature cylinder wear (Nikasil coating) Medium severity: Worn VANOS seals	High severity: Safe mode due to battery controller calibration (loss of propulsion) High severity: Fuel line that slips out of its clip and may leak Medium severity: e-Power warning and limited mode due to incorrect state-of-charge reading
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	None	None
With cautionVersions to be cautious about	M50B20, 2.0 litre (150 hp; 1990-1995)^[15][16] M50B25, 2.5 litre (192 hp; 1990-1995)^[15][16] M52B20, 2.0 litre (150 hp; 1994-1999)^[8][15] M52B25, 2.5 litre (170 hp; 1995-1999)^[8][15] M52B28, 2.8 litre (193 hp; 1995-1999)^[8][15][17] M52TUB20, 2.0 litre (150 hp; 1998-2001)^[7][15] M52TUB25, 2.5 litre (170 hp; 1998-2000)^[7][15] M52TUB28, 2.8 litre (193 hp; 1998-2001)^[3][7][15]	1.5 VC-Turbo e-Power 190 hp (Qashqai J12, since 2022)^[4][5][6] 1.5 VC-Turbo e-Power 204 hp (X-Trail T33, front-wheel drive, since 2022)^[4][11] 1.5 VC-Turbo e-Power e-4ORCE 213 hp (X-Trail T33, all-wheel drive, since 2022)^[11][13]
AvoidVersions to avoid	None	None

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

Cars that each one is fitted to

M50 and M52

1.5 VC-Turbo e-Power

Other comparisons

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Sources

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

BMW 3 Series E36 320i (M52B20): reliabilityEnginescope · Other source · consulted 2 November 2026
BMW M52 reliabilityAutoscore · Other source · consulted 2 November 2026
BMW M52 Engine: Performance, Reliability, and TuningBMWBlog · Motoring press · consulted 2 November 2026
Fiabilidad y averías del Nissan Qashqai 3 (2021)fiches-auto.fr · Motoring press · consulted 29 October 2026 · in French
Nissan Qashqai: richiamo per la batteria del sistema ibridoalVolante · Motoring press · published 4 August 2026 · consulted 29 October 2026 · in Italian
Nissanowski SUV z usterką systemu zarządzania akumulatoremAutokatalog.pl · Motoring press · published 2025 · consulted 29 October 2026 · in another language
BMW M52Wikipedia (inglés) · Other source · consulted 2 November 2026
BMW M52Wikipedia (alemán) · Other source · consulted 2 November 2026 · in German
BMW M50Wikipedia (inglés) · Other source · consulted 2 November 2026
BMW M50Wikipedia (alemán) · Other source · consulted 2 November 2026 · in German
Nissan X-Trail - WikipediaWikipedia · Other source · consulted 29 October 2026
Nissan KR engine - WikipediaWikipedia · Other source · consulted 29 October 2026
Nissan X-Trail (T33) - Wikipedia (versión alemana)Wikipedia · Other source · consulted 29 October 2026 · in German
Nissan z novim Qashqaijem uvaja e-Power v EvropiRTV Slovenija · General press · published 19 February 2021 · consulted 29 October 2026 · in another language
BMW M50 / M52: problemas conocidosEnginescope · Other source · consulted 2 November 2026
Der BMW M50 Motor: Technische Daten, Probleme, Haltbarkeit & FahrzeuglisteCarWiki.de · Other source · consulted 2 November 2026 · in German
BMW Z3 Reliability Guide: Everything You Need to Know Before BuyingEuro Premium Parts · Technical documentation · consulted 2 November 2026