Mercedes Citan Engine ReplacementCompare Prices & Save

A rebuilt OM607 diesel engine for a Mercedes Benz Citan typically costs £1,200-£3,200 supply only, with supply & fit adding £300-£600. Prices vary by engine code, variant and condition type.

• Rebuilt OM607.951 (109 CDI/111 CDI): £1,300-£3,200 supply only
• Used Citan engines: £800-£2,000 depending on mileage and warranty
• Reconditioned OM608 (W420 models): £2,000-£4,000 supply only
• Fitting through our network adds £300-£600 including warranty
• Main dealer replacement can cost £1,500-£2,000 more than specialist

The OM607 1.5-litre diesel is generally durable but has three well-documented weak points: timing chain stretch from 60k miles, EGR cooler cracking, and turbo actuator failure. These affect most Citan diesels eventually.

• Timing chain rattle on cold start affects many 109 CDI and 111 CDI units
• EGR cooler cracks (OEM A6070940001) - documented Mercedes TSB fault
• Turbo actuator drift causes loss of boost and reduced power
• Proper 5W-30 oil changes every 12k miles significantly extends chain life
• Post-TSB EGR coolers and upgraded tensioners resolve these issues

Yes. The M282 1.3-litre turbo petrol (fitted to 113 Citan models) suffers from premature timing chain tensioner wear, causing cold start rattle and potential chain failure. Mercedes issued Workshop Bulletin WI-2021-045 addressing this fault.

• Tensioner (OEM A2820500201) loses hydraulic pressure from 40k miles
• Cold start rattle lasting more than 1-2 seconds indicates tensioner wear
• Replacement with reinforced tensioner resolves the issue permanently
• Cam phaser rattle is another known M282 weakness
• Ignoring symptoms risks chain jump and valve damage

A straightforward Citan engine swap typically takes 1-2 working days through our specialist network. Mobile fitting may add 1 day for logistics, while complex swaps (petrol to diesel conversions) take longer.

• Standard supply & fit: 1-2 days at a fixed workshop location
• Mobile engine installation: 1-3 days depending on your location
• W415 (2012-2021) swaps are faster due to common parts availability
• W420 (2021-present) may require additional ECU programming time
• Express service available on high-demand OM607 units through some specialists

Every reconditioned or rebuilt Citan engine supplied through our network includes a minimum 12-month unlimited mileage warranty covering parts and labour for mechanical failure under normal use.

• 12-month unlimited mileage - no mileage cap on warranty period
• Covers internal engine components, timing system and oil seals
• Labour for warranted failures included when fitted by our specialists
• M282 tensioner wear excluded unless upgraded part fitted
• EGR cooler failure covered only if replaced with revised casting

Yes, but it's not recommended unless you have diagnostic equipment and workshop facilities. Citan engines require ECU coding, AdBlue system calibration (diesel) and timing alignment that most DIY mechanics can't perform.

• Engine swaps require lifting equipment and engine support bar
• Immobiliser and ECU coding needs Mercedes XENTRY or equivalent
• AdBlue system (OM608) requires professional reset after replacement
• Injector coding needed on OM607 diesel units
• Most suppliers void warranty on DIY installations

Yes. All reconditioned engines supplied through our network are built to meet UK emissions standards. OM608 units (2018+) are Euro 6d-Temp compliant, while earlier OM607 engines meet Euro 5 or Euro 6 standards depending on year.

• All rebuilt engines include new DPF where required for diesel variants
• EGR coolers replaced with updated crack-resistant castings
• Emissions tested before dispatch from specialist rebuilders
• M282 petrol engines include GPF (gasoline particulate filter) compliance
• Request MOT compliance certificate from your chosen supplier

You need a full replacement if you have timing chain snap, piston ring failure, major overheating damage, or catastrophic injector failure causing bore wash. Minor issues like EGR cooler failure or single injector faults usually just need component replacement.

• Timing chain snap always requires full replacement on interference engines
• Oil consumption over 1 litre per 600 miles suggests piston ring wear
• Overheating leading to warped head or block - replacement cheaper than repair
• Multiple injector failure (3-4 injectors) - replacement often better value
• Compression test below 250psi across any cylinder indicates serious wear

EGR cooler cracking on OM607 diesel engines is the most common failure, followed closely by timing chain stretch. The EGR cooler issue is so widespread Mercedes issued a TSB and revised cooler casting.

• EGR cooler cracks (A6070940001) cause white smoke and coolant loss
• Timing chain stretch affects high-mileage OM607 units from 60k miles
• Turbo actuator failure causes loss of power and limp mode
• AdBlue crystallisation affects OM608 engines (W420 models)
• M282 tensioner wear is most common petrol issue

Citan engine replacement costs are moderate for its class. A rebuilt OM607 costs £1,200-£3,200, similar to a Ford Transit Connect but less than a VW Caddy. The Renault-sourced engine means parts are widely available and cheaper than pure-Mercedes units.

• Citan OM607 rebuild: £1,200-£3,200 - comparable to Kangoo (same engine)
• VW Caddy 1.6 TDI: typically £200-£500 more expensive than Citan
• Ford Transit Connect 1.5 Ecoblue: similar £1,400-£3,000 range
• Parts availability is excellent due to shared K9K platform
• Specialist rebuilders are plentiful - unlike rare Mercedes engines