BMW M54 vs BMW N13: which engine is more reliable?

According to our risk index, the BMW M54 carries less risk than the BMW N13: 54/100 versus 57/100 (both high risk). The BMW M54 has 2 documented serious faults, the main one being «Thermostat and water pump failure»; the BMW N13 has 1 documented serious fault, the main one being «Timing chain and tensioner wear».

Risk index

BMW M54

High risk · 2 serious faults

Lower risk

Risk index

BMW N13

High risk · 1 serious fault

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

Reviewed on 5 October 20268 sources How we work

Is the BMW M54 reliable?

The BMW M54 (2000-2006) is a naturally aspirated petrol inline-six with a reputation for longevity, passing 200,000 km if maintained. Its weak points are the crankcase ventilation valve and the plastic cooling system; check that they have been renewed.^[1][2][3]

See the 5 of the BMW M54 faults

Is the BMW N13 reliable?

The BMW N13 (2011-2016), BMW's first turbocharged four-cylinder in three decades, powered the 114i, 116i, 118i and 120i (F20/F21) and the 316i (F30). It derives from the Prince engine developed with PSA, the same origin as the 1.6 THP. In 2013 BMW issued a technical service bulletin over timing chain and tensioner wear; oil consumption and carbon build-up on the injectors are other weak points shared with that family.^[4][5][6]

See the 4 of the BMW N13 faults

Side-by-side comparison

Comparison of BMW M54 and BMW N13
Item	BMW M54	BMW N13
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	—	1,598 cm³
Timing	Chain	Chain
Power	170–235 hp	102–177 hp
Production	2000–2006^[7][8]	2011–2016^[4][5]
Reliability
Risk index (what is it?)	54High risk	57High risk
Documented faults	5	4
Of high or critical severity	2	1
Worst severity	High severity	Critical severity
Main faults	High severity: Thermostat and water pump failure High severity: Cracked expansion tank and coolant leak Medium severity: Cracked crankcase ventilation valve (CCV) and oil consumption	Critical severity: Timing chain and tensioner wear Medium severity: High oil consumption Medium severity: High-pressure fuel pump (HPFP) failure
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	None	None
With cautionVersions to be cautious about	M54B22, 2.2 litres (168-170 hp)^[1][2][3] M54B25, 2.5 litres (189-192 hp)^[1][2][3] M54B30, 3.0 litres (228-235 hp)^[1][2][3]	114i 102 hp (75 kW, 2012-2015)^[5][6] 116i / 316i 136 hp (100 kW, 2011-2015)^[5][6] 118i 170 hp (125 kW, 2011-2016)^[5][6] 120i 177 hp (130 kW, 2015-2016)^[5][6]
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 M54

BMW N13

Other comparisons

With the BMW M54

With the BMW N13

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Sources

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

BMW M54 Engine Guide: Reliability, Common Problems & Tuning PotentialEuro Premium Parts · Technical documentation · consulted 5 October 2026
Il motore da 6 cilindri che supera agilmente i 300.000 kmAutoblog.it · Motoring press · published 13 February 2026 · consulted 5 October 2026 · in Italian
BMW M54 reliabilityAutoscore · Other source · consulted 5 October 2026
BMW N13Wikipedia (inglés) · Other source · consulted 27 September 2026
BMW N13Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Tickende Zeitbombe: So zuverlässig ist der Prince-Motor von PSA und BMWGebrauchtwagenberater.de · Motoring press · published 13 March 2026 · consulted 27 September 2026 · in German
BMW M54Wikipedia (inglés) · Other source · consulted 5 October 2026
BMW M54Wikipedia (alemán) · Other source · consulted 5 October 2026 · in German