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Mercedes-Benz G 400 CDI Diesel Replacement Engine Quotes for UK Drivers

Need an engine after a breakdown or major engine failure? Compare quotes for used and reconditioned engines, supply only or supply and fit, with vehicle recovery available across mainland UK.

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Simple Process

Get replacement engine options in four simple steps

One enquiry can help you compare suitable engine supply and fitting options without contacting garages one by one.

1

Enter vehicle details

Use your registration or provide the make, model and engine information needed to identify a suitable replacement.

2

Tell us what you need

Choose used or reconditioned, then tell us whether you need supply only, fitting or recovery.

3

Receive matching quotes

Your enquiry can be matched with relevant suppliers and specialist garages with suitable options.

4

Compare and choose

Compare price, engine condition, warranty and service details before deciding which option suits you.

Trusted Engine Solutions

Top Selling G 400 CDI Diesel Engine Prices

Explore quality used and reconditioned replacement engines, with expert guidance to help you find the right fit for your vehicle.

In Stock Save Up to 50%

Mercedes G 400 CDI Diesel M 176.980 Engine

Year: 2019 - 2024 Supply & Fit Available
Mercedes G 400 CDI Diesel Replacement Engine Options

Select Mercedes G 400 CDI Diesel Engine Size

Select your Mercedes G 400 CDI Diesel engine size to find the right replacement engine for your vehicle.

Engine Options

What type of replacement engine do you need?

The right choice depends on your vehicle, budget, how long you plan to keep it and what is currently available.

Quality checked used engine

Used Engines

A practical lower-cost option when a compatible engine is available. Selected used engines may include warranty cover of up to 6 months.

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Tested reconditioned engine ready for installation

Reconditioned Engines

Suitable when you want a rebuilt engine option with greater long-term reassurance. Qualifying engines may include warranty cover up to 3 years.

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Popular Searches

Popular replacement engine searches

Browse the replacement engines UK drivers search for most, based on genuine enquiry activity, vehicle demand and real customer interest.

The quickest way to compare Mercedes-Benz G 400 CDI Diesel engine replacement routes

Short answer: A broken engine does not automatically mean the vehicle has to be written off or repaired through a main dealer. Independent used and reconditioned routes can be compared around the actual vehicle.

  • Value: suitable jobs can save up to 40% against a comparable main-dealer route.
  • Fitting: use your own garage or request a fitted route through the UK network.
  • Condition choice: compare lower-cost used stock with a more extensively renewed reconditioned engine.
  • Compatibility: registration, VIN and engine code may be needed before the engine is confirmed.

Use the quotation to remove uncertainty

A trustworthy engine quote should tell you what unit is being supplied, its condition, what is attached, how long the warranty lasts and what the fitter must do. Vague phrases such as 'tested engine' are less useful than clear written scope. Engines4Sale's 35 years of experience, qualified mechanics and UK-wide workshop network should support that transparency rather than replace it.

Why a visually similar engine can still be wrong for a Mercedes-Benz G 400 CDI Diesel

Engines that look alike in photographs may differ by code, output, electronics, emissions generation or attached components. Matching should therefore begin with the vehicle identity rather than the advert. A correct engine-code or VIN-level check can prevent transport costs, workshop delays and disputes over parts that do not transfer. The quotation should identify what arrives with the engine and what the fitter is expected to reuse.

Why this particular Mercedes-Benz G 400 CDI Diesel needs a vehicle-specific quote

A numeric badge can identify a model or output family without uniquely identifying the engine itself, so it should never replace an engine-code check. Premium vehicles can have complex ancillaries and electronics, making exact specification particularly important.

  • Are fluids, filters and mandatory fitting items included in labour?
  • Has oil contamination been considered if the original failure involved lubrication problems?
  • How soon can the vehicle realistically return to the road after the engine is confirmed?

Choose the engine around how long you plan to keep the Mercedes-Benz G 400 CDI Diesel

If the goal is to get a useful vehicle back on the road at a controlled cost, a correctly matched used engine may be appropriate. If the vehicle is a long-term keeper, paying more for a reconditioned unit can be easier to justify. Warranty can extend to 6 months for used engines and 3 years for reconditioned engines, depending on the supplied unit and conditions. Your ownership plan should influence which premium is worth paying.

Four situations that change a Mercedes-Benz G 400 CDI Diesel engine decision

A strong quote solves the customer's actual problem, not just the need for an engine. Consider these common priorities:

  • If your priority is keeping a known vehicle: Compare the repair with the real cost and uncertainty of replacing the car with another used vehicle whose history you do not know.
  • If your priority is car is far from your usual mechanic: Use recovery and the mainland UK garage network as part of the comparison rather than restricting the search to the nearest seller.
  • If your priority is original failure involved overheating: Make cooling-system checks part of the fitting plan so the replacement is not exposed to the same unresolved cause.
  • If your priority is diagnosis is uncertain: Do not order an engine simply to test a theory. Confirm that the fault is internal and replacement is genuinely the most sensible route.
Supply-only, fitting and recovery: three different needs

If the vehicle is already with a garage you trust, supply-only may be the simplest route. If you need a fitter as well, supply-and-fit can keep the engine and installation under one coordinated plan. If the vehicle cannot be driven safely, recovery can be arranged to the garage doorstep across mainland UK. State the required route at the start so the quotation reflects the real job rather than an engine sitting separately from labour and transport.

What determines the final Mercedes-Benz G 400 CDI Diesel engine replacement cost?

There is no responsible fixed price for every derivative. Cost changes with the exact engine required, used or reconditioned condition, availability, included ancillaries, warranty and fitting work. Delivery or recovery, fluids, filters, timing components, turbo or fuel-system work and diagnostics can also affect the completed total. Compare written quotations on the same scope. On suitable jobs, alternative independent routes can deliver savings of up to 40% against comparable main-dealer costs.

Get a matched Mercedes-Benz G 400 CDI Diesel engine quote in three steps
  1. Explain the situation: Give the vehicle details, the workshop diagnosis if available and whether the vehicle can currently be driven.
  2. Match the engine: Use the strongest identification available so the proposed unit is checked against the actual vehicle.
  3. Plan the return to road: Confirm engine condition, fitting, recovery, warranty and timing as one repair route.

Providing these details at the start reduces back-and-forth and makes Mercedes-Benz G 400 CDI Diesel engine quotes easier to compare fairly.

Helpful Engine Guides

Useful information before you buy a Replacement Engine

Learn what to check before buying a replacement engine, from compatibility and mileage to warranties, delivery options and supplier reliability.

Engine price comparison guide
PRICE GUIDE

How much does a replacement engine cost in the UK?

Understand the factors that change engine supply and fitting prices.

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Used vs reconditioned engine comparison
BUYING GUIDE

Used vs reconditioned engines: what's the difference?

Compare cost, condition, intended use and warranty considerations.

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Engine code identification guide
COMPATIBILITY

How do I find the correct engine code for my car?

Learn why the right engine identification matters before ordering.

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Frequently Asked Questions

Frequently asked questions about Mercedes-Benz G 400 CDI Diesel engines

Could a Mercedes-Benz G 400 CDI Diesel engine replacement save money versus a main dealer?

Potentially. Suitable jobs can save up to 40% against a comparable main-dealer route. Compare like for like, including engine condition, warranty, labour, recovery and included parts.

Can a Mercedes-Benz G 400 CDI Diesel engine be delivered to my own mechanic?

Yes. Supply-only is suitable when your garage has agreed to fit the engine. Before ordering, make sure the fitter has seen the warranty conditions and knows which supporting checks or replacement parts are required.

Is engine replacement worth it on an older Mercedes-Benz G 400 CDI Diesel?

It can be if the body, gearbox and other major systems are sound and the completed repair compares favourably with replacing the vehicle. Consider the whole car and how long you intend to keep it.

How long will a Mercedes-Benz G 400 CDI Diesel engine replacement take?

Timescale depends on exact engine availability, transport or recovery, workshop capacity and whether additional faults are found. Ask for a current estimate after the engine has been matched rather than relying on a generic turnaround promise.

What warranty can I get on a reconditioned Mercedes-Benz G 400 CDI Diesel engine?

Reconditioned engines can be supplied with warranty cover of up to three years, depending on the engine and written conditions. Check what fitting, servicing and documentation the warranty requires before installation.

Should the cause of the old Mercedes-Benz G 400 CDI Diesel engine failure be checked?

Yes. A replacement can be damaged if the original cause—such as overheating, oil loss or an external supporting-system fault—is left unresolved. Root-cause checks should form part of a responsible fitting plan.

What diesel-system checks matter with a Mercedes-Benz G 400 CDI Diesel engine replacement?

Where relevant, the fitter should consider turbo oil supply, injectors, cooling and emissions-related faults so an external problem does not damage the replacement. The exact checks depend on the engine and diagnosis.

Customer Feedback

What drivers say about using Engines4Sale

Read genuine reviews from UK drivers who found quality replacement engines through our trusted supplier network.

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★★★★★

"Brilliant customer service ontime delivery. Engine was clean and tested as promised."

JS
Jones Smith Ford Transit · Verified Buyer
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★★★★★

"Cheapest on the net, hats off to E4S! Saved over £400 on my reconditioned engine."

CA
Cathy Adams Audi A4 TDI · Verified Buyer
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★★★★★

"Found the cheapest engine for my A4, great service and fast door-step delivery."

RL
Rebecca Long BMW 320d · Verified Buyer
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★★★★☆

Easy to compare used vs reconditioned without ringing round five different yards. Communication could've been a touch faster, but the engine itself runs perfectly.

MK
Michael Kerr Vauxhall Astra · Verified Buyer
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★★★★★

Supply and fit sorted in one booking. The supplier was properly vetted and the fitting garage kept me updated the whole way through. Would use again.

HP
Hamza Patel Mercedes C-Class · Verified Buyer
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