BMW N43/N46 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 BMW N43/N46: 36/100 (moderate risk) versus 59/100 (high risk). The BMW N43/N46 has 1 documented serious fault, the main one being «Wear and breakage of the timing chain guides»; 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

BMW N43/N46

High risk · 1 serious fault

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 29 October 202614 sources How we work

Is the BMW N43/N46 reliable?

The BMW N43 and N46 (2004-2012) are naturally aspirated four-cylinder engines fitted to the 1 Series E87, 3 Series E90, X1 E84 and Z4 E85/E86, among others. They have a reputation for being solid if properly maintained, but share well-known wear of the timing chain guides and tensioner, of the Valvetronic and of the VANOS valves; the direct-injection N43 adds documented failures of the injectors, ignition coils and the NOx sensor.^[1][2][3][4]

See the 4 of the BMW N43/N46 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.^[5][6][7]

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

Side-by-side comparison

Comparison of BMW N43/N46 and 1.5 VC-Turbo e-Power
Item	BMW N43/N46	1.5 VC-Turbo e-Power
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	—	1,497 cm³
Timing	Chain	—
Power	121–170 hp	190–213 hp
Production	2004–2012^[1][2][8][9]	since 2022^{[10][11][12][13]}
Reliability
Risk index (what is it?)	59High risk	36Moderate risk
Documented faults	4	4
Of high or critical severity	1	3
Worst severity	Critical severity	High severity
Main faults	Critical severity: Wear and breakage of the timing chain guides Medium severity: Injector, ignition coil and NOx sensor failures (N43) Medium severity: Wear of the Valvetronic and the VANOS solenoid valves	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	N46B20 127-148 hp, indirect injection (2004-2007)^[3][4] N46NB20 150-170 hp, revised ECU (2006-2012)^[3][4][14] N43B16 121 hp, 1.6 litres (2007-2011)^[1][3] N43B20 121-168 hp, 2.0 litres (2007-2013)^[1][3]	1.5 VC-Turbo e-Power 190 hp (Qashqai J12, since 2022)^[5][6][7] 1.5 VC-Turbo e-Power 204 hp (X-Trail T33, front-wheel drive, since 2022)^[5][10] 1.5 VC-Turbo e-Power e-4ORCE 213 hp (X-Trail T33, all-wheel drive, since 2022)^[10][12]
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

BMW N43/N46

1.5 VC-Turbo e-Power

Other comparisons

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With the 1.5 VC-Turbo e-Power

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Sources

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

BMW N43Wikipedia (inglés) · Other source · consulted 27 September 2026
BMW N46Wikipedia (inglés) · Other source · consulted 27 September 2026
BMW N43: Bei diesem Benziner ist Ärger vorprogrammiertGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
BMW N46: Typische Probleme & HaltbarkeitGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
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 N43Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
BMW N46Wikipedia (alemán) · Other source · consulted 27 September 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 X1 E84 – Bekannte Probleme & SchwachstellenGebrauchtwagenberater · Motoring press · published 9 May 2023 · consulted 27 September 2026 · in German