How much does a Mercedes-Benz Vaneo 1.7 CDI engine replacement cost in the UK?

A reconditioned OM668 engine typically costs £1,200–£2,200 supply only, with used units available from £800–£1,500. Total installed cost is around £1,800–£2,800. Use our calculator for a figure specific to your Vaneo.

Is the Mercedes-Benz Vaneo 1.7 CDI engine reliable?

Yes — the OM668 is generally a robust and reliable engine with a typical lifespan of 240,000–250,000 km. It's more reliable than the petrol M166. Common issues include injector problems, EGR valve failure, and piston ring wear.

What are the common problems with the Mercedes-Benz Vaneo 1.7 CDI?

Injector and fuel system issues (rough running, stalling, hard starting), EGR valve failure (excessive smoke), piston ring wear (oil consumption), turbocharger issues, and a cramped engine bay that makes many repairs labour-intensive.

Is it worth replacing a Mercedes-Benz Vaneo 1.7 CDI engine, or should I scrap the car?

Vaneo values range from £1,000–£4,000 depending on condition. A £1,200–£2,200 reconditioned engine is 30–60% of the vehicle's value — apply the Mercedes 70% scrap threshold. If the car is a cherished example with good bodywork, replacement may be worthwhile.

How do I find my Mercedes-Benz Vaneo 1.7 CDI engine code?

The engine code is OM668.914 — it's the only 1.7-litre CDI used in the Vaneo. You can find it on the VIN plate, in the vehicle documentation, or on a label on the engine itself. Production ran from 2001 to 2005.

Can I repair the OM668 injectors, or do they need replacement?

Injectors can sometimes be cleaned or refurbished, but replacement is often the most reliable solution. Replacement costs £300–£800 per injector depending on the workshop. If you experience rough running or hard starting, have the fuel system diagnosed promptly. Catching injector issues early can prevent more serious engine damage.

Mercedes-Benz Vaneo 1.7 CDI2001–20051.7-litre CDI Diesel

Mercedes-Benz Vaneo 1.7 CDI Engine Replacement — Compare Prices & Get Quotes

Name: Mercedes-Benz Vaneo 1.7 CDI UK Engine Enquiry Data 2025
Creator: MercedesEngine.uk

The Vaneo 1.7 CDI is powered by Mercedes' OM668 1.7-litre diesel — a compact, transverse four-cylinder that delivers impressive economy and a surprising turn of pace. It's a robust engine, but injector and EGR issues, plus a cramped engine bay, are well-documented. Get quotes from UK specialists for reconditioned, rebuilt and used units today.

Supply & Fit Available

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Supply & Fit Available

12-Month Warranty

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25+ Specialists

Mercedes-Benz Vaneo 1.7 CDI Engines — from £800 to £4,000Code: OM668

Mercedes-Benz Vaneo 1.7 CDI Engines — from £800 to £4,000· Code: OM668

Instant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide Network

The 1.7 CDI THROUGH TIME — Era Map

Four generations. Four eras. One guide to reliability, costs and what really matters.

GenerationYearsEngine CodeReliabilityRecon CostEra Note

Why use this era map?

Every cost guide, reliability rating and engine code on this page is aligned to the data above. This keeps everything consistent and trustworthy.

Real UK Cost Data

Verified Reliability

Expert Insights

Updated for 2025

Mercedes-Benz Vaneo 1.7 CDI Engine Replacement Costs

Supply Only£1,200–£2,200

Fitted (Indie)£1,800–£2,800

Warranty12–24 months

Best ForMost owners — best cost/warranty balance

Engine TypeSupply OnlyFitted (Indie)WarrantyBest For

Used Engine£800–£1,500£1,500–£2,5001–6 monthsBudget priority; project vehicles

Reconditioned Engine£1,200–£2,200£1,800–£2,80012–24 monthsMost owners — best cost/warranty balance

Rebuilt Engine£2,000–£4,000£2,800–£5,00012–24 monthsLong‑term ownership; 3+ year horizon

Main Dealer NewN/A — no longer availableN/A—N/A — specialist rebuild only

Figures above reflect the current Vaneo 1.7 CDI market. A reconditioned engine typically costs between £1,200–£2,200 supply only, with total installed costs ranging from £1,800–£2,800. Used units are available from £800–£1,500. See the Era Map above for generation-specific context.

Labour estimate: Fitting a Vaneo 1.7 CDI engine typically takes 10–14 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer). The engine bay is notoriously cramped — many maintenance tasks require dropping the engine with the subframe.

→ Compare Vaneo 1.7 CDI engine prices from UK specialists

Common Problems

1. Injector and Fuel System Issues

Symptoms: Rough idle, hard starting, black smoke, loss of power, stalling, engine warning light

Typical mileage: 80,000–120,000 miles

Repair cost: £300–£800 (injector replacement or cleaning)

Replacement cost: £1,200–£2,200 (if injector failure causes engine damage)

🟠 Check - book inspection urgently

Our recommendation:

Fuel injector issues are a well-documented problem on the OM668. The engine may cut out from a cold start and stall, or suffer from stalling during deceleration and RPM limiting above 3,500 rpm. The Bosch fuel system is generally reliable, but the fuel pressure regulator can fail. If you experience any running issues, have the fuel system diagnosed promptly.

Read the full injector failure guide

1. Injector and Fuel System Issues

Symptoms: Rough idle, hard starting, black smoke, loss of power, stalling, engine warning light

Typical mileage: 80,000–120,000 miles

Repair cost: £300–£800 (injector replacement or cleaning)

Replacement cost: £1,200–£2,200 (if injector failure causes engine damage)

🟠 Check - book inspection urgently

Our recommendation:

Read the full injector failure guide

2. EGR Valve and Turbocharger Problems

Symptoms: Excessive smoke, loss of power, rough idle, poor fuel economy, engine warning light

Typical mileage: 60,000–100,000 miles

Repair cost: £300–£800 (EGR valve cleaning or replacement)

Replacement cost: £800–£1,500 (if turbo failure occurs)

🟡 Monitor - book inspection soon

Our recommendation:

The OM668 can suffer from EGR valve problems, leading to excessive smoke and poor running. Turbocharger issues have also been reported. Regular maintenance and using quality fuel can help prevent these issues.

Read the full EGR and turbo failure guide

3. Crankshaft and Piston Ring Wear

Symptoms: Excessive oil consumption, blue smoke, loss of power, knocking from the bottom end

Typical mileage: 100,000–150,000 miles

Repair cost: £800–£2,000 (piston ring replacement or bottom-end rebuild)

Replacement cost: £1,200–£2,200 (if engine damage is severe)

🟡 Monitor - book inspection soon

Our recommendation:

Piston ring problems can occur on the OM668, leading to oil consumption. If you notice increasing oil consumption or blue smoke, have the engine inspected. While the OM668 is generally robust, these issues can develop at higher mileages.

Read the full piston ring failure guide

Weighing Your Options?

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Vaneo 1.7 CDI — Repair, Buy, or Replace?

Every 320d has a story. Make the right call with clear data, real-world costs, and honest guidance from UK specialists.

Vaneo 1.7 CDI — Repair, Buy, or Replace?

Every 320d has a story. Make the right call with clear data, real-world costs, and honest guidance from UK specialists.

Can It Be Repaired?

ProblemRepairable?Typical CostWhen It Makes SenseInjector issues✅ Yes£300–£800Well-understood repair — catch before further damageEGR valve failure✅ Yes£300–£800Cleaning or replacement — restore performancePiston ring wear✅ Yes£800–£2,000Labour-intensive but cheaper than a full engineTurbocharger failure✅ Yes£800–£1,500Replacement — catch before debris damages the engineCrankshaft failure❌ Usually NoEngine replacementIf the bottom end fails, replacement is the only option

Buying This Vaneo 1.7 CDI? Check These First

Buy If

Evidence of regular oil changes with correct MB-spec oil
No excessive smoke or rough running
Full service history — the OM668 is robust but needs care
A well-maintained example — these are getting old now

Avoid If

Excessive smoke from the exhaust — EGR or injector issues are likely
Hard starting or stalling — fuel system problems are expensive
Blue smoke or excessive oil consumption — piston ring wear is likely
Poor service history — the OM668 is forgiving but not indestructible

Closing Verdict

The OM668 is a robust, economical diesel that's well-suited to the Vaneo's practical character. It's generally reliable with a typical lifespan of 240,000–250,000 km. However, injector and EGR issues are common, and the cramped engine bay makes many repairs labour-intensive. Buy on history, maintain on schedule, and the 1.7 CDI will reward you with excellent economy and surprising durability. A reconditioned engine from a specialist can be a cost-effective solution if the worst happens.

Don't guess.Get the right engine at the right price.

→ Compare Vaneo 1.7 CDI engine prices before you buy

Don't Guess. Compare.

Get real quotes from vetted UK specialists and make the right call for your 320d.

→ Compare Vaneo 1.7 CDI engine prices before you buy

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Buying Checklist

Before you buy a used Mercedes-Benz Vaneo 1.7 CDI (or before you commit to an engine replacement), check these:

1. Cold Start — Does it start cleanly? Any stalling or cutting out? (injector or fuel system warning)

2. Smoke — Any excessive black or blue smoke? (EGR, turbo or piston ring warning)

3. Service History — including evidence of regular oil changes and major maintenance

4. Oil Consumption — Does it use more than 1L per 1,000 miles? (piston ring or turbo warning)

5. Running Quality — Any rough idle or hesitation? (injector or EGR issues)

6. Engine Warning Light — Have codes been read? Any unresolved issues?

7. MOT History — Check for emissions-related failures (EGR, injectors)

8. Bodywork — Check for rust; the Vaneo is now over 20 years old

Buy smart. Drive with confidence.

A few checks today can save thousands tomorrow. Use this checklist to avoid the most common 320d pitfalls.

Buy smart. Drive with confidence.

A few checks today can save thousands tomorrow. Use this checklist to avoid the most common 320d pitfalls.

Engine Codes

This table's rows match Section 1B's Era Map exactly — one engine throughout this badge's production run.

OM668.914

Years2001–2005

Power75–91 hp

2025 Enquiries[PATTERN DATA]

Avg. Recon Cost£1,200–£2,200 [MB-QUOTE]

Engine CodeYearsPower2025 EnquiriesAvg. Recon Cost

OM668.9142001–200575–91 hp[PATTERN DATA]£1,200–£2,200 [MB-QUOTE]

Technical Specs

OM668.914 — 1.7 CDI

Displacement1,689cc (1.7‑litre)

Cylinders4-cylinder inline

Bore x Stroke80.0 mm x 84.0 mm

Compression Ratio~19.0:1

Fuel SystemCommon-rail direct injection

TurbochargerSingle turbocharger with intercooler (91 hp version)

ValvetrainDOHC, 4 valves per cylinder

ConstructionLight-alloy block

→ Compare Vaneo 1.7 CDI engine prices for your Mercedes

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Market Intelligence

Most Common Failure

Injector and fuel system issues — rough running, stalling, hard starting

Average Enquiry Mileage

80,000

–130,000 miles【PATTERN DATA】

Average Replacement Cost

£1,200

–£2,200 reconditioned, supply only【MB-QUOTE】

Most Requested Engine Code

OM668.914 — the 1.7 CDI【PATTERN DATA】

Peak Enquiry Season

Spring — pre‑summer vehicle preparation【PATTERN DATA】

Regional Demand

South East18%

London16%

South West (12%)【PATTERN DATA】

Regional Demand Breakdown

18%South East

16%London

Frequently Asked Questions

All prices are indicative UK market ranges based on historical quote data from our network of engine specialists. Actual costs vary by variant, engine code, damage severity and workshop location. Use our free comparison tool to get tailored quotes. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited-mileage warranty — always confirm terms with your chosen supplier.

Trusted Vaneo 1.7 CDI Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real Vaneo 1.7 CDI owners, as part of the Engine Finders network, across the W414 generation.
Compare Vaneo 1.7 CDI Engine Replacement Companies
see prices, warranty terms and supply & fit options side‑by‑side before you commit, with specialists who genuinely understand the OM668's injector, EGR and fuel system nuances.
UK Engine Replacement Services for Vaneo 1.7 CDI
supply‑only or full supply & fit available nationwide, covering Mercedes' compact MPV diesel with a 12‑month warranty as standard.

Find the best Mercedes-Benz Vaneo 1.7 CDI engine replacement UK owners trust. Compare prices from trusted specialists on MercedesEngine.uk today and keep your Vaneo on the road.

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