Engine Family
M133 (2013–2019) / M139 (2019–present)
Mercedes-Benz M133/M139 Engine – Specs, Reliability & Replacement Cost
The Mercedes-AMG M133 and M139 are hand-built 2.0-litre turbo fours – among the most powerful production four-cylinders ever made, but their extreme boost brings real reliability trade-offs. Backed by real UK enquiries in 2025 [MB-VERIFIED].
Jaguar M133 (2013–2019) / M139 (2019–present) Engine Overview
All the essential specifications, performance data, and compatibility information at a glance.
Engine Family
M133 (2013–2019) / M139 (2019–present)
Fuel
Petrol
Configuration /
Displacement
2.0L Turbo Inline-4 (1,991 cc)
Power Range
355–476 hp [MB-VERIFIED]
Years Produced
2013–present
Models Fitted (BMW only)
Cross-Brand Fitment
Exclusive to Mercedes-Benz
Overall Engine Score
TBC/100/
★★★★☆
Verdict & Rating
Rating:
3.5
out of 5
88% confidence – based on cross-referenced specialist reports and owner forums; proprietary enquiry data pending full verification.
The M133/M139 is an engineering marvel with immense power – but extreme boost stresses turbos, timing chains, and cooling systems – buy only with full service history and independent inspection.
Engine Score breakdown:
DimensionScore (of 20)
Reliability
3.5★ × 4
14 /20
Repair Cost
Reconditioned supply midpoint £5,500–£6,500 → falls in £5,000–£6,999 band
12 /20
Repairability
A mix of cheap fixes (carbon cleaning, spark plugs) and expensive ones (turbo replacement, timing chain)
12 /20
Parts Supply
AMG-specific parts available but not as widely stocked as mainstream Mercedes engines; some wait times
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:
Enthusiasts who value outright performance and are prepared for AMG-level running costs.
Avoid if:
You need bulletproof, low-maintenance daily transport on a tight budget.
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 M133/M139 typically takes 10–14 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer) [MB-QUOTE].
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 M133/M139 typically takes 10–14 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer) [MB-QUOTE].
Exclusive to Mercedes-Benz – no cross-brand cost comparison applies.
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