How much does a Mercedes Vito 109-119 CDI engine replacement cost in the UK-

A Vito 109-119 CDI engine replacement typically costs between £1,500 and £4,500 depending on engine code (OM651.940, OM651.955 or OM651.958), condition type, and whether fitting is included. Rebuilt OM651.940 (109-113 CDI): £1,500-£3,300 supply only. Rebuilt OM651.955 (116-119 CDI): £1,800-£4,200 supply only. Used engines from breakers: £800-£2,500 but higher risk. Labour for supply & fit adds £800-£1,200 to any engine price.

What causes the OM651 timing chain rattle on cold start in a Vito 109-119 CDI-

The OM651 timing chain rattle is caused by tensioner seal failure allowing oil pressure loss, leading to chain stretch and guide wear. The chain is at the rear of the engine - most repairs require engine removal. REC-005099 recall addresses tensioner seal leaks on 2014 Vito models. Cold-start rattling indicates chain elongation requiring full engine-out replacement. Rebuilt OM651 units include updated tensioner seals and hardened guide rails as standard.

What are the signs of injector seal failure on a Vito 109-119 CDI-

The OM651's injector seals typically show warning signs before complete failure. Loss of power and rough idle. Diesel pooling in the valve cover around injectors. Increased oil consumption and sludge buildup. Check engine light with rail pressure error codes. Hard starting when warm.

Should I repair or replace my Vito 109-119 CDI engine-

Repair if the failure is isolated (e.g., timing chain tensioner on OM651, injector seals, EGR cooler, AdBlue injector). Replace if there's bottom end damage, bore scoring, or catastrophic timing chain failure. OM651 timing chain replacement: £1,200-£1,800 - do this if rattle is persistent. Injector seal & EGR replacement: £800-£1,400 - catch it early. Full OM651 rebuild: £2,500-£4,200 - for catastrophic failure or 120k+ miles. Given Vito 109-119 CDI values (£4,000-£15,000), a rebuilt engine is typically good value.

How do I know which engine code my Vito 109-119 CDI has-

Check your vehicle log book (V5C) for the engine number, which includes the engine code prefix. V5C log book shows full engine number with code prefix. Engine code stamped on cylinder block. Vito 109 CDI: OM651.940 (95hp). Vito 110 CDI: OM651.940 (95hp). Vito 113 CDI: OM651.940 (136hp). Vito 116 CDI: OM651.955 (163hp). Vito 119 CDI: OM651.955 or OM651.958 (190hp).

Can I fit a used Vito 109-119 CDI engine myself-

We strongly advise against DIY fitting on a Vito 109-119 CDI. The OM651's rear-mounted timing chain and ECU coding requirements demand specialist equipment and expertise. Engine must be removed to access rear timing chain - requires proper lifting equipment. Subframe must be lowered on W447 models - not a driveway job. ECU coding and injector calibration require Mercedes-Benz Star Diagnosis tools. Specialist supply & fit costs £800-£1,200 - worth every penny.

Mercedes Vito 109-119 CDI Specialists

Mercedes Benz Vito 109-119 CDI Engine Replacement Compare Prices & Get Quotes

Get quotes today from trusted UK Mercedes Benz Vito 109-119 CDI engine specialists. Compare prices on reconditioned, rebuilt and used OM651 2.1-litre diesel engines - supply & fit available nationwide for W639 and W447 generations.

Supply & Fit Available

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Mercedes Benz Vito 109-119 CDI Engine

from£1,500 to £4,500

Usedfrom £800
Reconditionedfrom £1,500
Common codesOM651.940, OM651.955, OM651.958

Mercedes Benz vito 109-119 CDI Used Engine — OM651.940

Mercedes Benz vitoUsed Engine — OM651.940

Mercedes Benz vito 109-119 CDI Reconditioned Engine — OM651.940

Mercedes Benz vitoReconditioned Engine — OM651.940

Mercedes Benz vito 109-119 CDI Rebuilt Engine — OM651.940

Mercedes Benz vitoRebuilt Engine — OM651.940

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How it works

3 Simple Steps to Finding the Right Replacement Engine

Clear information first, then the right engine and specialist for your exact vehicle.

Variant History

Mercedes Vito 109-119 CDI Engine History & Specs at a Glance

The Mercedes Vito 109-119 CDI range represents the core of the Vito diesel line-up across the W639 (2010-2014) and W447 (2014-present) generations, powered by the OM651 2.1-litre four-cylinder turbo-diesel - a versatile workhorse that delivers 95-190hp across multiple power outputs, balancing commercial durability with fuel efficiency.

2008
OM651 engine introduced, replacing OM646 across Mercedes commercial vehicle range
2010
W639 Vito facelift introduces OM651 in 110-119 CDI variants
2014
W447 Vito launched, OM651 carries over for rear-wheel-drive variants
2018
OM651.958 Euro 6 BlueTEC update introduced with AdBlue system
2020
OM654 2.0L diesel gradually replaces OM651 in facelift W447 models

Every OM651 diesel engine fitted to the Mercedes Vito 109-119 CDI range is covered below, with UK rebuilt pricing and known failure points from real owner experience.

Engine Codes & Pricing

Mercedes Vito 109-119 CDI Engine Codes Specifications & Replacement Cost

Find your exact engine code, specs and UK replacement cost guide.

OM651.940 — 2.1L Diesel (2010-2024)

Power Output: 95-136 hp (70-100 kW)
Displacement: 2,143cc
Configuration: Inline-4, DOHC, common-rail direct injection (CDI), single turbo
Years Fitted: 2010-2024

Can’t find your exact engine code?-> Get quotes for OM651.940 Mercedes Vito 109-113 CDI engine replacement

-> Get quotes for OM651.940 Mercedes Vito 109-113 CDI engine replacement

Common Problems

Mercedes Vito 109-119 CDI Engine Problems Repair Cost vs Replacement

The Mercedes Vito 109-119 CDI range relies on the OM651 2.1-litre diesel - a robust commercial workhorse that has developed a well-documented reputation for specific, predictable failures. Timing chain tensioner seal failure (REC-005099) dominates replacement demand, while injector seal blow-by and EGR cooler cracking also drive significant repair enquiries. Every rebuilt engine supplied through EnginesMarket includes upgraded components designed to address the original failure point - plus a minimum 12-month unlimited mileage warranty. Below we break down the most common Vito 109-119 CDI engine failures, what they cost to fix, and when replacement is the smarter financial decision.

Common failure points and repair options

OM651 Timing Chain Tensioner Failure

Affected: Mercedes Vito 109 CDI, 110 CDI, 113 CDI, 116 CDI, 119 CDI (2010-2024, OM651.940, OM651.955, OM651.958)
Typical failure mileage: 70,000 - 120,000 miles

Root cause

The OM651 timing chain is located at the rear of the engine block. A faulty tensioner seal (REC-005099 recall) allows oil pressure loss, causing chain slack and a characteristic rattle on cold start. The chain stretches and guides wear over time. If ignored, the chain can jump teeth, leading to catastrophic valve and piston interference.

Repair options

Repair tier	Dealer price	Specialist price
Minor - Tensioner Replacement	£800-£1,200	£400-£700
Major - Full Chain & Tensioner Kit	£1,900-£2,800	£1,200-£1,800
Full Replacement - Rebuilt OM651 Engine	£5,500-£7,500	£2,500-£4,200

Our recommendation

We recommend replacing the chain assembly only if cold-start rattle is recent and cylinder compression remains stable. On a Vito with confirmed chain jump, metallic knocking, or diagnostic timing deviation codes, a rebuilt OM651 is the only economically sound choice given the extensive labour required for engine-out diagnostics and the high risk of repeat failure with stock components.

-> Compare rebuilt OM651 engine prices for your Mercedes Vito 109-119 CDI

OM651 Injector Seal Blow-By & Carbon Buildup

Affected: Mercedes Vito 109-119 CDI (2010-2024, OM651 family)
Typical failure mileage: 90,000 - 130,000 miles

Root cause

Degrading injector copper seals allow combustion gases into the crankcase, carbonising pistons and oil rings. Early piezo injectors can also fail, causing rough idle and rail pressure errors. EGR coolers crack under thermal stress, allowing coolant to enter the exhaust system.

Repair options

Repair tier	Dealer price	Specialist price
Minor - Injector Seals & EGR Cooler Swap	£1,200-£2,000	£800-£1,400
Intermediate - Full Injector Set (4)	£1,600-£2,400	£1,000-£1,600
Full Replacement - Reconditioned OM651 Engine	£5,200-£7,000	£2,200-£3,800

Our recommendation

We recommend a full reconditioned engine if compression drops below specification across any cylinder or if coolant contamination has already damaged turbocharger bearings. Partial fixes on a heavily carbon-damaged OM651 rarely survive commercial delivery cycles, making a complete rebuilt unit the most cost-effective long-term investment for fleet operators.

-> Get quotes for OM651 EGR & injector-related Vito 109-119 CDI engine failure

OM651 DPF & AdBlue System Failures

Affected: Mercedes Vito 109-119 CDI (2014-present, OM651.958 BlueTEC with AdBlue)
Typical failure mileage: 70,000 - 100,000 miles

Root cause

DPF blockage occurs on vehicles used primarily for short journeys where regeneration cycles cannot complete. AdBlue injector crystallisation blocks the dosing system, triggering countdown warnings. Low-pressure EGR valve clogging reduces power and triggers limp mode.

Repair options

Repair tier	Dealer price	Specialist price
Minor - DPF Regeneration & EGR Cleaning	£300-£500	£150-£300
Intermediate - AdBlue Injector & Dosing Module	£900-£1,400	£500-£800
Full Replacement - Reconditioned OM651 Engine	£5,200-£7,000	£2,200-£3,800

Our recommendation

For a Vito used primarily for urban delivery, regular forced DPF regenerations and EGR cleaning are essential preventative maintenance. If you're facing a third emissions component failure within 12 months, price up a full rebuilt engine - the labour to repeatedly access the SCR system becomes uneconomical.

-> Compare OM651 DPF and AdBlue repair costs for your Vito 109-119 CDI

Don't Let Engine Failure Write Off Your Mercedes Vito 109-119 CDI

A failed OM651 engine doesn't have to mean the end of your Vito. Whether you're dealing with timing chain tensioner failure, injector seal blow-by, or AdBlue system issues, EnginesMarket makes it simple to compare prices from trusted UK Mercedes Vito specialists. Every rebuilt engine in our network includes upgraded components designed to address the original failure point, a minimum 12-month unlimited mileage warranty, and nationwide delivery with supply & fit options available.

Compare Mercedes Vito 109-119 CDI Engine Replacement Prices Now ->

FAQ

Mercedes Vito 109-119 CDI Engine ReplacementFrequently Asked Questions

Everything Mercedes Benz Vito 109-119 CDI owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

A Vito 109-119 CDI engine replacement typically costs between £1,500 and £4,500 depending on engine code (OM651.940, OM651.955 or OM651.958), condition type, and whether fitting is included.

Rebuilt OM651.940 (109-113 CDI): £1,500-£3,300 supply only
Rebuilt OM651.955 (116-119 CDI): £1,800-£4,200 supply only
Used engines from breakers: £800-£2,500 but higher risk
Labour for supply & fit adds £800-£1,200 to any engine price

-> Compare Mercedes Vito 109-119 CDI engine replacement prices from UK specialists

The OM651 timing chain rattle is caused by tensioner seal failure allowing oil pressure loss, leading to chain stretch and guide wear.

The chain is at the rear of the engine - most repairs require engine removal
REC-005099 recall addresses tensioner seal leaks on 2014 Vito models
Cold-start rattling indicates chain elongation requiring full engine-out replacement
Rebuilt OM651 units include updated tensioner seals and hardened guide rails as standard

-> Get quotes for rebuilt OM651 Mercedes Vito 109-119 CDI engines with updated timing components

Repair if the failure is isolated (e.g., timing chain tensioner on OM651, injector seals, EGR cooler, AdBlue injector). Replace if there's bottom end damage, bore scoring, or catastrophic timing chain failure.

OM651 timing chain replacement: £1,200-£1,800 - do this if rattle is persistent
Injector seal & EGR replacement: £800-£1,400 - catch it early
Full OM651 rebuild: £2,500-£4,200 - for catastrophic failure or 120k+ miles
Given Vito 109-119 CDI values (£4,000-£15,000), a rebuilt engine is typically good value

-> Compare Vito 109-119 CDI engine repair vs replacement costs

Check your vehicle log book (V5C) for the engine number, which includes the engine code prefix.

V5C log book shows full engine number with code prefix
Engine code stamped on cylinder block
Vito 109 CDI: OM651.940 (95hp)
Vito 110 CDI: OM651.940 (95hp)
Vito 113 CDI: OM651.940 (136hp)
Vito 116 CDI: OM651.955 (163hp)
Vito 119 CDI: OM651.955 or OM651.958 (190hp)

-> Find your Mercedes Vito 109-119 CDI engine code and compare prices

We strongly advise against DIY fitting on a Vito 109-119 CDI. The OM651's rear-mounted timing chain and ECU coding requirements demand specialist equipment and expertise.

Engine must be removed to access rear timing chain - requires proper lifting equipment
Subframe must be lowered on W447 models - not a driveway job
ECU coding and injector calibration require Mercedes-Benz Star Diagnosis tools
Specialist supply & fit costs £800-£1,200 - worth every penny

-> Find Vito 109-119 CDI engine supply & fit deals from accredited specialists

Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty, with many specialists offering 24-month coverage on OM651 rebuilds. This includes parts and labour for any manufacturing defect or installation error.

12-month unlimited mileage is the minimum standard
OM651 rebuilds often include 24-month warranty
All warranties cover parts, labour, and MOT compliance
Extended warranties available at point of purchase

-> Compare Vito 109-119 CDI engines with warranty coverage

Why Choose Us

Compare Mercedes Vito 109-119 CDI Engine Prices Today

Comparing quotes for your Mercedes Vito 109-119 CDI engine replacement is completely free and carries no obligation - enter your registration above, receive tailored prices from UK specialists who know the OM651 2.1-litre diesel engine inside out, and get back on the road with confidence. Every rebuilt engine is backed by a minimum 12-month unlimited mileage warranty.

100+100+ Vito diesel engines supplied through our network

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Compare quotes from trusted UK Mercedes Benz Vito 109-119 CDI engine specialists with warranty-backed rebuilt, reconditioned and used options nationwide.

Mercedes Benz Vito 109-119 CDI Engine Replacement Compare Prices & Get Quotes

Get your free Mercedes Benz vito 109-119 CDI engine quotes

3 Simple Steps to Finding the Right Replacement Engine

Mercedes Vito 109-119 CDI Engine History & Specs at a Glance

Mercedes Vito 109-119 CDI Engine Codes Specifications & Replacement Cost

OM651.940 — 2.1L Diesel (2010-2024)

Mercedes Vito 109-119 CDI Engine Problems Repair Cost vs Replacement

OM651 Timing Chain Tensioner Failure

OM651 Injector Seal Blow-By & Carbon Buildup

OM651 DPF & AdBlue System Failures

Don't Let Engine Failure Write Off Your Mercedes Vito 109-119 CDI

Mercedes Vito 109-119 CDI Engine ReplacementFrequently Asked Questions

Compare Mercedes Vito 109-119 CDI Engine Prices Today