BMW B47 vs 2.0 dCi: which engine is more reliable?

According to our risk index, the 2.0 dCi carries less risk than the BMW B47: 52/100 versus 73/100 (both high risk). The BMW B47 has 3 documented serious faults, the main one being «EGR cooler leaks with risk of engine fire»; the 2.0 dCi has 2 documented serious faults, the main one being «Premature turbocharger failure».

Risk index

BMW B47

High risk · 3 serious faults

Risk index

2.0 dCi

High 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

Reviewed on 27 September 202614 sources How we work

Is the BMW B47 reliable?

The BMW B47 (since 2014, successor to the N47) improves the timing chain tensioner, guides and oil supply and greatly reduces the failure rate of its predecessor, but it is not free of problems: the EGR cooler has been the subject of several BMW technical campaigns for engine fire risk since 2018, and the turbo and particulate filter need careful maintenance.^[1][2][3][4]

See the 4 of the BMW B47 faults

Is the 2.0 dCi reliable?

The 2.0 dCi (M9R) is a Renault-Nissan Alliance diesel with known, well-documented weak points: the turbo and the EGR valve fail relatively often, the particulate filter clogs up in urban use, and there are cases of injectors and even the timing chain failing earlier than expected in several of the models that use it.^[5][6][7][8]

See the 5 of the 2.0 dCi faults

Side-by-side comparison

Comparison of BMW B47 and 2.0 dCi
Item	BMW B47	2.0 dCi
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	1,995 cm³	1,995 cm³
Timing	Chain	Chain
Power	114–228 hp	90–177 hp
Production	since 2014^[1]	2005–2016^{[9][10][11][12]}
Reliability
Risk index (what is it?)	73High risk	52High risk
Documented faults	4	5
Of high or critical severity	3	2
Worst severity	Critical severity	Critical severity
Main faults	Critical severity: EGR cooler leaks with risk of engine fire High severity: Timing chain wear (improved, but is it really at the front?) High severity: Premature turbo wear from neglected maintenance	High severity: Premature turbocharger failure Critical severity: Timing chain wear or breakage Medium severity: Clogged particulate filter (DPF)
Most expensive documented repair	up to €2,000Premature turbo wear from neglected maintenancePublished figure^[3]	No reliable data
Which versions to buy
BuyRecommended versions	None	None
With cautionVersions to be cautious about	B47 114-150 hp, single turbo (2014-)^[2][4] B47 168-190 hp, single turbo (2014-)^[2][4] B47 202-228 hp, twin-turbo (2015-)^[2][4] B47C20 (MINI Cooper D/SD and Countryman, 2014-)^[1][4]	2.0 dCi 130-150 (M9R, cars, 2005-2012)^[5][6][8] 2.0 dCi 160-177 (M9R, higher-output cars, 2006-2016)^[6][7][13] 2.0 dCi 90-115 (M9R, vans, 2006-2014)^[14]
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 B47

See the 19 models with the BMW B47

2.0 dCi

See the 12 models with the 2.0 dCi

Other comparisons

With the BMW B47

With the 2.0 dCi

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.

BMW B47Wikipedia (inglés) · Other source · consulted 26 September 2026
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 26 September 2026 · in Spanish
Motor BMW B47: problemas, modelos y qué revisarCarexam · Motoring press · consulted 26 September 2026 · in Spanish
Motor BMW B47 - Reparación EspecializadaDasercars · Technical documentation · consulted 26 September 2026 · in Spanish
Fiabilité Renault Laguna 3 : pannes et avisFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité Renault Koleos : pannes et avisFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité Renault Espace 4 : pannes et avisFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité Nissan Qashqai : pannes et avisFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Anexo:Motores de RenaultWikipedia · Other source · consulted 27 September 2026 · in Spanish
Renault KoleosWikipedia · Other source · consulted 27 September 2026
Renault Mégane IIIWikipedia · Other source · consulted 27 September 2026 · in French
Renault Grand Espace 2.0 dCi PrivilegeAutopista · Motoring press · published 19 September 2006 · consulted 27 September 2026 · in Spanish
Fiabilité Nissan X-Trail : pannes et avisFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Renault TraficWikipedia · Other source · consulted 27 September 2026