BMW N47 vs BMW N57: which engine is more reliable?

The BMW N47 and the BMW N57 tie on our risk index: 87/100 (very high risk). The BMW N47 has 3 documented serious faults, the main one being «Rear timing chain stretch and breakage»; the BMW N57 has 3 documented serious faults, the main one being «EGR cooler leaks with risk of engine fire».

Risk index

BMW N47

Very high risk · 3 serious faults

Risk index

BMW N57

Very high risk · 3 serious faults

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

Reviewed on 27 September 202618 sources How we work

Is the BMW N47 reliable?

The BMW N47 (2007-2016, including its MINI derivatives N47C16/N47C20) is mechanically sound in the basics, but it carries a serious, well-documented design flaw: the rear timing chain wears or breaks prematurely on many units, especially those built between 2007 and 2009, with repairs from €1,500 to over €8,000 if the engine ends up damaged. Without a clear timing history, great caution is needed.^[1][2][3][4]

See the 5 of the BMW N47 faults

Is the BMW N57 reliable?

The BMW N57 (2008-2019, successor to the M57) is a six-cylinder diesel that is mechanically robust in the basics, but it shares with the N47 and B47 the EGR cooler covered by BMW's service campaign for engine fire risk, and it inherits from the N47 the timing chain at the rear of the block, with wear cases documented mainly from 200,000 km. Without a clear history of these checks, it is worth buying with some caution.^[5][6][7]

See the 4 of the BMW N57 faults

Side-by-side comparison

Comparison of BMW N47 and BMW N57
Item	BMW N47	BMW N57
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	1,995 cm³	2,993 cm³
Timing	Chain	Chain
Power	90–218 hp	204–381 hp
Production	2007–2016^{[1][8][9][10]}	2008–2019^[5][11]
Reliability
Risk index (what is it?)	87Very high risk	87Very high risk
Documented faults	5	4
Of high or critical severity	3	3
Worst severity	Critical severity	Critical severity
Main faults	Critical severity: Rear timing chain stretch and breakage Critical severity: Broken intake manifold swirl flaps High severity: Turbo and wastegate valve failure	Critical severity: EGR cooler leaks with risk of engine fire Critical severity: Rear timing chain wear High severity: Loss of thrust on twin-turbo versions due to the vacuum circuit or the actuator
Most expensive documented repair	up to €3,000Rear timing chain stretch and breakagePublished figure^{[12][13][14][15][16]}	No reliable data
Which versions to buy
BuyRecommended versions	None	None
With cautionVersions to be cautious about	N47D20 116 hp (K0/K1, 2007-2014)^[1][4] N47D20 143 hp (U0/U1, 2007-2014)^[1][4] N47D20 177-184 hp (O0/O1, 2007-2014)^[1][4] N47D20 204-218 hp twin-turbo (2007-2014)^[1][4] N47C16 90-112 hp (MINI Cooper D, 2010-2016)^[9] N47C20 112-143 hp (MINI Cooper SD, 2011-2016)^[10]	N57D30 204-211 hp, single turbo (U0/UL, 2010-2013)^[7][17] N57D30 245-258 hp, single turbo (O0/O1, 2008-2019)^[7][17] N57D30 299-313 hp twin turbo (T0/T1, 2009-2019)^[17][18]
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 N47

See the 12 models with the BMW N47

BMW N57

See the 10 models with the BMW N57

Other comparisons

With the BMW N47

With the BMW N57

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Sources

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

BMW N47Wikipedia (inglés) · Other source · consulted 26 September 2026
BMW's timing chain problem comes back to haunt carmakerThe Irish Times · General press · consulted 26 September 2026
El problema de la cadena de distribución en los motores N47 de BMWSeis en Línea · Motoring press · consulted 26 September 2026 · in Spanish
Fallo en la cadena de distribución BMW motores N47Arroyo Auto, Especialista BMW MINI · Technical documentation · consulted 26 September 2026 · in Spanish
BMW N57Wikipedia (inglés) · Other source · consulted 27 September 2026
Motor BMW B47 - Reparación EspecializadaDasercars · Technical documentation · consulted 27 September 2026 · in Spanish
324.000 diésel de BMW tendrán que pasar por el taller en Europa, por un posible riesgo de incendio en la EGRDiariomotor · Motoring press · published 8 August 2018 · consulted 27 September 2026 · in Spanish
BMW N47D20 engine specifications, problems and reliabilityBimmerPulse · Technical documentation · consulted 26 September 2026
N47C16A MotorMotorinsel · Technical documentation · consulted 26 September 2026
N47C20A MotorMotorinsel · Technical documentation · consulted 26 September 2026
BMW N57Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Motor N47 - precio cambio cadena BMWTaller Barcelona (Dasercars) · Technical documentation · consulted 26 September 2026 · in Spanish
Precio sustitución cadenas motor N47 BMW MINIArroyo Auto, Especialista BMW MINI · Technical documentation · consulted 26 September 2026 · in Spanish
Motor BMW N47 - Reparación EspecializadaDasercars · Technical documentation · consulted 26 September 2026 · in Spanish
Rotura cadena distribución y rotura motor N47OCU · Consumer association · published 2 September 2021 · consulted 26 September 2026 · in Spanish
Problema cadena BMW motor N47, qué hacer y solucionesRecomotor Blog · Motoring press · consulted 26 September 2026 · in Spanish
Motor BMW N57 - Reparación EspecializadaDasercars · Technical documentation · consulted 27 September 2026 · in Spanish
Motor BMW N57: problemas, modelos y qué revisarCarexam · Motoring press · consulted 27 September 2026 · in Spanish