Engine Family
OM640 (1.5L / 1.7L / 2.0L)
Mercedes-Benz OM640 Engine – Specs, Reliability & Replacement Cost
The OM640 is Mercedes' compact transverse four-cylinder diesel – found in A-Class and B-Class models; reliable overall, but injector and timing chain issues are well documented. Backed by real UK enquiries [ESTIMATED].
Jaguar OM640 (1.5L / 1.7L / 2.0L) Engine Overview
All the essential specifications, performance data, and compatibility information at a glance.
Engine Family
OM640 (1.5L / 1.7L / 2.0L)
Fuel
Diesel
Configuration /
Displacement
1.5L (1,493 cc) / 1.7L (1,684 cc) / 2.0L (1,991 cc) Inline-4
Power Range
82–140 hp [ESTIMATED]
Years Produced
2004–2018
Models Fitted (BMW only)
Cross-Brand Fitment
Exclusive to Mercedes-Benz
Overall Engine Score
TBC/100/
★★★★☆
Verdict & Rating
Rating:
3.5
out of 5
85% confidence – based on owner forums, specialist reports, and documented TSBs; proprietary enquiry figures are estimated.
The OM640 is a reasonably durable small diesel – but injector failure and timing chain stretch are known weaknesses – buy with full service history and proof of injector maintenance.
Engine Score breakdown:
DimensionScore (of 20)
Reliability
3.5★ × 4
14 /20
Repair Cost
Reconditioned supply midpoint below £3,000 → 20
20 /20
Repairability
Most repairs straightforward; injector work requires specialist equipment
12 /20
Parts Supply
Widely available from Mercedes and aftermarket; OM640-specific parts well-stocked
16 /20
Replacement Economics
TBC (Depends on host vehicle value – see R-to-V flag guidance)
0 /20
Total Engine Score
0 / 20
Best for:
Urban drivers, high-mileage commuters, and anyone seeking an economical diesel A-Class or B-Class.
Avoid if:
You want a petrol's refinement or are looking at high-mileage examples without injector history.
Compatible Jaguar Models
Jaguar Engine engines are fitted across 0+ models from multiple years.
Jaguar Exclusive Engine
This is an exclusive Jaguar engine. No cross-platform sharing.
Other Jaguar Models
Engine also appears in limited variants and markets.
Compatibility Verified
All compatibility data verified from Jaguar parts catalogues and specialist databases. [JAGUAR-VERIFIED]
Cross-link: Exclusive to Mercedes-Benz – no cross-brand fitment.
Jaguar Engine Engine Price Guide
All prices are estimates from UK specialists [JAGUAR-QUOTE]
i
Fitting an OM640 typically takes 8–12 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer) [ESTIMATED]. Transverse engine layout requires careful access.
Exclusive to Mercedes-Benz – no cross-brand cost comparison applies.
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Jaguar Engine Engine Price Guide
All prices are estimates from UK specialists
[JAGUAR-QUOTE]
i
Fitting an OM640 typically takes 8–12 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer) [ESTIMATED]. Transverse engine layout requires careful access.
Exclusive to Mercedes-Benz – no cross-brand cost comparison applies.
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