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1.0 EcoBoost vs M60 and M62: which engine is more reliable?

According to our risk index, the M60 and M62 carries less risk than the 1.0 EcoBoost: 63/100 versus 71/100 (both high risk). The 1.0 EcoBoost has 3 documented serious faults, the main one being «Degradation of the timing belt running in oil»; the M60 and M62 has 2 documented serious faults, the main one being «Broken or worn plastic timing chain guides».

Risk index

1.0 EcoBoost

71

High risk · 3 serious faults

Risk index

M60 and M62

63

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

18 sourcesHow we work

Is the 1.0 EcoBoost reliable?

It is a turbocharged direct-injection three-cylinder that has won Engine of the Year several times, but it has two very well-documented weak points: two belts running in oil (timing and oil pump) that can disintegrate and seize the engine, and cases of coolant leaks and overheating in early units. It is best bought with a service history and the belts checked or replaced on time.[1][2][3][4]

See the 4 of the 1.0 EcoBoost faults

Is the M60 and M62 reliable?

BMW's M60 and M62 V8s have a reputation for durability if the cooling system is looked after, but the M62 carries two well-documented weak points: the plastic chain guides of the timing chain and, from 1998, the VANOS seals. The M60 suffered cylinder wear from Nikasil with sulphur-contaminated petrol.[5][6][7][8]

See the 5 of the M60 and M62 faults

Side-by-side comparison

Comparison of 1.0 EcoBoost and M60 and M62
1.0 EcoBoostM60 and M62
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement999 cm³—
TimingWet belt (belt-in-oil)Chain
Power100–155 hp218–347 hp
Productionsince 2012[1][9][10][11]1992–2005[8][12][13][14]
Reliability
Risk index (what is it?)71High risk63High risk
Documented faults45
Of high or critical severity32
Worst severityCritical severityCritical severity
Main faults
  1. Critical severity: Degradation of the timing belt running in oil
  2. Critical severity: Oil pump belt and tensioner failure
  3. Critical severity: Coolant leaks and overheating from the turbo hose
  1. Critical severity: Broken or worn plastic timing chain guides
  2. Critical severity: Cylinder wear in the M60 (and some early M62s) from the Nikasil coating
  3. Medium severity: Worn seals on the M62 TU VANOS unit
Most expensive documented repairup to €1,200Degradation of the timing belt running in oilPublished figure[2]No reliable data
Which versions to buy
BuyRecommended versionsNoneNone
With cautionVersions to be cautious about
  • 1.0 EcoBoost 100/125 (Fox, 2012-2017)[2][3][15]
  • 1.0 EcoBoost 100/125/140 with cylinder deactivation (from ~2017)[16][17]
  • 1.0 EcoBoost Hybrid 48V mild hybrid (125/155 hp, from 2019)[1][18]
  • M60B30, 3.0 litres (218 hp; 1992-1996)[5][6][8]
  • M60B40, 4.0 litres (286 hp; 1992-1996)[5][7][8]
  • M62B35, 3.5 litres (235 hp; 1996-1998)[5][6]
  • M62TUB35, 3.5 litres (238-245 hp; 1998-2003)[5][6]
  • M62B44, 4.4 litres (286 hp; 1996-1998)[5][6]
  • M62TUB44, 4.4 litres (286 hp; 1998-2005)[5][6]
  • M62TUB46, 4.6 litres (347 hp; 2002-2004)[5][6]
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

1.0 EcoBoost

See the 12 models with the 1.0 EcoBoost

M60 and M62

Other comparisons

With the 1.0 EcoBoost

With the M60 and M62

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. Ford EcoBoost engineWikipedia · Other source · consulted 26 September 2026
  2. Alerta Ford: la correa de distribución del 1.0 EcoBoost puede romper el motor y la NHTSA ya investigaMotor16 · Motoring press · consulted 26 September 2026 · in Spanish
  3. Los Ford 1.0 EcoBoost tricilíndricos están dando problemas de correas bañadas que recuerdan al caso PureTechMotor.es · Motoring press · consulted 26 September 2026 · in Spanish
  4. Gripa el motor por problema en el manguito se queda sin refrigeranteOpinautos · Owners' forum · consulted 26 September 2026 · in Spanish
  5. BMW M62 V8 Engine Guide: Problems, Reliability, TuningBMWBlog · Motoring press · published 27 September 2026 · consulted 2 November 2026
  6. BMW M62 4.4 V8 (1996-2003): problemas conocidosEnginescope · Other source · consulted 2 November 2026
  7. BMW 7er (1994-2002): Schwachstellen und MotorenAuto Bild · Motoring press · published 25 February 2002 · consulted 2 November 2026 · in German
  8. BMW M60Wikipedia (inglés) · Other source · consulted 2 November 2026
  9. Prueba: Ford Fiesta 1.0 EcoBoost 100 CV (2013)km77 · Motoring press · consulted 26 September 2026 · in Spanish
  10. Ford Mondeo Berlina Trend 1.0 EcoBoost 92 kW (125 CV) (2015-2018): precio y ficha técnicakm77 · Technical documentation · consulted 26 September 2026 · in Spanish
  11. Ford B-MAX Trend 1.0 EcoBoost 100 CV (2012-2018): precio y ficha técnicakm77 · Technical documentation · consulted 26 September 2026 · in Spanish
  12. BMW M60Wikipedia (alemán) · Other source · consulted 2 November 2026 · in German
  13. BMW M62Wikipedia (inglés) · Other source · consulted 2 November 2026
  14. BMW M62Wikipedia (alemán) · Other source · consulted 2 November 2026 · in German
  15. Ford EcoBoost engines: reliability, problems and should you buy one?Carbuyer · Motoring press · consulted 26 September 2026
  16. Ford's Self-Clogging 1.0-Liter EcoBoost Engine Is Finally Getting RecalledThe Drive · Motoring press · consulted 26 September 2026
  17. The Largest Ford EcoBoost Recalls In 15 Years Of ProductionCarBuzz · Motoring press · consulted 26 September 2026
  18. Stellantis no es el único afectado por la correa de distribución bañada en aceiteAutofácil · Motoring press · consulted 26 September 2026 · in Spanish