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BMW M57 vs 1.5 / 2.0 EcoBlue: which engine is more reliable?

According to our risk index, the 1.5 / 2.0 EcoBlue carries less risk than the BMW M57: 59/100 versus 63/100 (both high risk). The BMW M57 has 2 documented serious faults, the main one being «Broken intake swirl flaps»; the 1.5 / 2.0 EcoBlue has 2 documented serious faults, the main one being «Degradation of the wet timing belt (2.0 EcoBlue)».

Risk index

BMW M57

63

High risk · 2 serious faults

Risk index

1.5 / 2.0 EcoBlue

59

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

8 sourcesHow we work

Is the BMW M57 reliable?

The BMW M57 (1998-2010) is a six-cylinder diesel with a reputation for great mechanical longevity, capable of exceeding 500,000 km when well maintained, but a good share of the versions built before 2008 -especially with an automatic gearbox- have metal swirl flaps in the intake that can break and wreck the engine; check whether the car has them and what condition they are in before buying.[1][2][3]

See the 4 of the BMW M57 faults

Is the 1.5 / 2.0 EcoBlue reliable?

EcoBlue has been Ford's diesel family since 2016, with two very different engines despite the shared name: the 2.0 (codenamed «Panther») debuted a wet timing belt (belt-in-oil) and a second wet belt for the oil pump, the same type of design that has caused problems on other Ford engines; the 1.5, by contrast, uses a conventional dry belt. The 2.0 powers vans, SUVs and large saloons; the 1.5 the smaller models.[4][5]

See the 3 of the 1.5 / 2.0 EcoBlue faults

Side-by-side comparison

Comparison of BMW M57 and 1.5 / 2.0 EcoBlue
BMW M571.5 / 2.0 EcoBlue
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement——
TimingChainWet belt (belt-in-oil)
Power150–286 hp85–213 hp
Production1998–2010[1][6]since 2016[4][7]
Reliability
Risk index (what is it?)63High risk59High risk
Documented faults43
Of high or critical severity22
Worst severityCritical severityCritical severity
Main faults
  1. Critical severity: Broken intake swirl flaps
  2. High severity: Crankcase ventilation (PCV) valve failure
  3. Medium severity: Cracked exhaust manifold
  1. Critical severity: Degradation of the wet timing belt (2.0 EcoBlue)
  2. Critical severity: Wet oil pump belt (2.0 EcoBlue)
  3. Medium severity: Emissions system warnings (AdBlue/EGR) and injector wear
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNone
  • 1.5 EcoBlue 85/95/100/120 (dry timing belt, since 2018)[5]
With cautionVersions to be cautious about
  • M57D25, 2.5 litres (150-197 hp, 2000-2010 depending on application)[2]
  • M57D30, first-generation 3.0 litres (177-193 hp, 1998-2006 depending on application)[2]
  • M57D30TU, first revision 3.0 litres (201-272 hp, 2001-2006)[2]
  • M57D30TU2, second revision 3.0 litres, aluminium block (204-286 hp, 2004-2010)[2]
  • 2.0 EcoBlue single-turbo 105/130/150/170/190, with and without mild hybrid (since 2016)[5][8]
  • 2.0 EcoBlue twin-turbo 213 (Ranger and high-demand applications, since ~2019)[5]
AvoidVersions to avoidNoneNone

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 M57

See the 10 models with the BMW M57

1.5 / 2.0 EcoBlue

See the 13 models with the 1.5 / 2.0 EcoBlue

Other comparisons

With the BMW M57

With the 1.5 / 2.0 EcoBlue

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.

  1. BMW M57Wikipedia (inglés) · Other source · consulted 27 September 2026
  2. Motor BMW M57 - Reparación EspecializadaDasercars · Technical documentation · consulted 27 September 2026 · in Spanish
  3. BMW M57D30 engine specifications, problems and reliabilityBimmerPulse · Technical documentation · consulted 27 September 2026
  4. Ford EcoBlue engineWikipedia · Other source · consulted 27 September 2026
  5. Which Cars Have a Wet Belt? Full UK Engine List (2026)CarOkay · Other source · published 2026 · consulted 27 September 2026
  6. BMW M57Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
  7. Nuevo motor Ford 2.0 EcoBlue Diésel: más potente y ahorradorAutopista.es · Motoring press · published April 2016 · consulted 27 September 2026 · in Spanish
  8. Todos los coches afectados ya por problemas de motor a causa de correas de distribución en aceiteAutopista.es · Motoring press · published February 2025 · consulted 27 September 2026 · in Spanish