OM654 vs 2.2 MultiJet / BlueHDi (Stellantis): which engine is more reliable?

According to our risk index, the 2.2 MultiJet / BlueHDi (Stellantis) carries less risk than the OM654: 14/100 (low risk) versus 63/100 (high risk). The OM654 has 3 documented serious faults, the main one being «Timing chain wear or breakage (2016 to 2021 units)»; the 2.2 MultiJet / BlueHDi (Stellantis) has 1 documented serious fault, the main one being «Unvulcanised fuel return pipe: fuel leak and fire risk».

Risk index

OM654

High risk · 3 serious faults

Risk index

2.2 MultiJet / BlueHDi (Stellantis)

Low risk · 1 serious fault

Lower risk

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

Reviewed on 30 October 202619 sources How we work

Is the OM654 reliable?

The OM654 is the 2.0-litre four-cylinder diesel with which Mercedes-Benz replaced the OM651 from 2016, fitted to most of its passenger cars and mid-size vans. It has a reputation for reliability: we found no mechanical faults as serious and widespread as on the brand's earlier diesels, although there were recalls for the timing chain (units from 2016 to 2021) and the coolant pump, and the NOx sensor or AdBlue system fail with some frequency.^[1][2][3][4]

See the 4 of the OM654 faults

Is the 2.2 MultiJet / BlueHDi (Stellantis) reliable?

The 2.2 diesels of Stellantis's large vans (BlueHDi DW12 in the Boxer, Jumper and Movano; Multijet 3 in the Ducato) are recent engines with no fault statistics of their own. What is documented are campaigns: AdBlue and SCR software, and the fuel return pipe on 2024-2025 units, with a fire risk. Long-term history is missing.^{[5][6][7][8][9]}

See the 2 of the 2.2 MultiJet / BlueHDi (Stellantis) faults

Side-by-side comparison

Comparison of OM654 and 2.2 MultiJet / BlueHDi (Stellantis)
Item	OM654	2.2 MultiJet / BlueHDi (Stellantis)
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	1,950 cm³	—
Timing	Chain	Timing belt (dry)
Power	116–272 hp	120–180 hp
Production	since 2016^[1][2]	since 2019^{[10][11][12][13]}
Reliability
Risk index (what is it?)	63High risk	14Low risk
Documented faults	4	2
Of high or critical severity	3	1
Worst severity	Critical severity	High severity
Main faults	Critical severity: Timing chain wear or breakage (2016 to 2021 units) Critical severity: Leak in the vacuum-operated coolant pump (overheating risk) High severity: Wear of the turbocharger and charge-air intercooler	High severity: Unvulcanised fuel return pipe: fuel leak and fire risk Low severity: AdBlue (SCR) system: the warning light may not come on if the urea doser fails
Most expensive documented repair	up to €850NOx sensor failure and SCR/AdBlue system warningsPublished figure^[4][14]	No reliable data
Which versions to buy
BuyRecommended versions	None	None
With cautionVersions to be cautious about	OM654 first generation (2016-2021)^[3][4] OM654 M, with 48 V mild hybrid (since 2021)^[3][4][14]	2.2 BlueHDi 120/140/165 (DW12 RU, Euro 6d, Boxer and Jumper 2019-2023, Movano C 2021-2023)^{[6][15][16][17]} 2.2 Multijet 3 H3-Power 120/140/160/180 (Ducato, Euro 6d-Final, 2021-2023)^[5][18][19] 2.2 Multijet Euro 6e 120/140/160/180 (Ducato, Boxer, Jumper, Movano C and Proace Max, 2024 onwards)^[7][8][9]
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

OM654

See the 9 models with the OM654

2.2 MultiJet / BlueHDi (Stellantis)

Other comparisons

With the OM654

With the 2.2 MultiJet / BlueHDi (Stellantis)

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Sources

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

Mercedes-Benz OM654 engineWikipedia · Other source · consulted 27 September 2026
Mercedes-Benz OM 654Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Mercedes-Benz GLC (X253): Alle typischen Probleme & MängelGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
Fiabilité Mercedes Classe E (2016-2023)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiat Ducato 2.3 Multijet 2026: Probleme, Zahnriemen, Varianten (nota sobre el 2.2 Multijet 3)PlanMyCamper · Other source · consulted 9 October 2026 · in German
Boxer: error de software del inyector de urea (alerta Safety Gate A12/01870/23)RappelConso (Gobierno de Francia) · Official body · published 25 August 2023 · consulted 9 October 2026 · in French
Ducato NG: tubo de retorno de combustible (alerta Safety Gate SR/00527/26)RappelConso (Gobierno de Francia) · Official body · published 20 February 2026 · consulted 9 October 2026 · in French
Rückruf Stellantis: Diese Transporter können Kraftstoff verlierenAuto Motor und Sport · Motoring press · published 4 March 2026 · consulted 9 October 2026 · in German
Stellantis. Risque de fuite de carburant sur les véhicules utilitairesL'Argus · Motoring press · published 12 March 2026 · consulted 9 October 2026 · in French
PSA EW/DW engine (sección DW12 y DW12 RU)Wikipedia (inglés) · Other source · consulted 9 October 2026
Fiat Ducato (motores Euro 6d-Temp, 6d-Final y 6e)Wikipedia (alemán) · Other source · consulted 9 October 2026 · in German
Atención a la junta de culata del motor 2.2 de la Fiat Ducato y equivalentesAutopos · Motoring press · published 15 July 2026 · consulted 9 October 2026 · in Spanish
Opel Movano (Movano C desde 2021)Wikipedia (alemán) · Other source · consulted 9 October 2026 · in German
Fiabilité Mercedes GLC (2015-2022)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Jumper: error de software del inyector de urea (alerta Safety Gate A12/01876/23)RappelConso (Gobierno de Francia) · Official body · published 25 August 2023 · consulted 9 October 2026 · in French
Movano: error de software del inyector de urea (alerta Safety Gate A12/01877/23)RappelConso (Gobierno de Francia) · Official body · published 25 August 2023 · consulted 9 October 2026 · in French
DVSA – base de llamadas a revisiónDVSA (Reino Unido) · Official body · consulted 9 October 2026
ADAC Pannenstatistik 2026 (categoría Vans/Transporter)ADAC · Reliability study · published 23 April 2026 · consulted 9 October 2026 · in German
Fiat Ducato 2015-2025 Maintenance Plans (2.2 H3-Power)Haynes (Reino Unido) · Technical documentation · consulted 9 October 2026