How long does a Ford Fiesta 1.0 EcoBoost Mild Hybrid engine replacement take-

A standard Ford Fiesta 1.0 EcoBoost Mild Hybrid engine swap typically takes 1 to 2 days of labour once the replacement unit has arrived.

Ford Fiesta 1.0 EcoBoost Mild Hybrid Specialists

Ford Fiesta 1.0 EcoBoost Mild Hybrid Engine Replacement Compare Prices & Get Quotes

Get quotes today from trusted UK Ford Fiesta 1.0 EcoBoost Mild Hybrid engine specialists. Compare prices on reconditioned, rebuilt and used engines to find the most cost-effective, warranty-backed solution for your vehicle.

Supply & Fit Available

12-Month Warranty

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100+ Suppliers

Ford Fiesta 1.0 EcoBoost Mild Hybrid Engine

from£1,800 to £4,200

Usedfrom £700
Reconditionedfrom £1,800
Common codesM1DG, M1DJ

Ford fiesta 1.0 EcoBoost Mild Hybrid Used Engine — M1DG / M1DJ

Ford fiestaUsed Engine — M1DG / M1DJ

Ford fiesta 1.0 EcoBoost Mild Hybrid Reconditioned Engine — M1DG / M1DJ

Ford fiestaReconditioned Engine — M1DG / M1DJ

Ford fiesta 1.0 EcoBoost Mild Hybrid Rebuilt Engine — M1DG / M1DJ

Ford fiestaRebuilt Engine — M1DG / M1DJ

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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

Ford Fiesta 1.0 EcoBoost Mild Hybrid Engine History & Specs at a Glance

When the 1.0 EcoBoost Mild Hybrid (MHEV) was introduced to the Fiesta Mk8 lineup, it marked a crucial engineering update, replacing the problematic "wet belt" design of earlier generations with a much more robust timing chain while improving fuel efficiency via a 48V integrated starter/generator.

2020
M1DG / M1DJ (1.0L Petrol Mild Hybrid), 1.0L, 125 PS (Introduction of the MHEV system featuring a durable timing chain, eliminating the catastrophic wet belt degradation risk of pre-2019 models).
2023
End of Production (The Ford Fiesta range was discontinued in 2023, making well-maintained MHEV variants highly sought after in the used market).

Every engine fitted to the Ford Fiesta 1.0 EcoBoost Mild Hybrid is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Ford Fiesta 1.0 EcoBoost Mild Hybrid Engine Codes Specifications & Replacement Cost

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

M1DG / M1DJ — 1.0L Petrol Mild Hybrid (2020-2023)

Power Output: 125 PS
Years Fitted: 2020-2023

Can’t find your exact engine code?-> Get quotes for M1DG Ford Fiesta 1.0 EcoBoost Mild Hybrid engine replacement

-> Get quotes for M1DG Ford Fiesta 1.0 EcoBoost Mild Hybrid engine replacement

Common Problems

Ford Fiesta 1.0 EcoBoost Mild Hybrid Engine Problems Repair Cost vs Replacement

The Ford Fiesta 1.0 EcoBoost Mild Hybrid is widely regarded as a major reliability improvement over previous 1.0 EcoBoost generations due to the switch from a wet timing belt to a timing chain. However, like all modern turbocharged direct-injection engines, it can experience specific component issues. Rebuilt engines supplied through EnginesMarket include upgraded components addressing original failure points, plus a minimum 12-month unlimited-mileage warranty.

Common failure points and repair options

Water Pump & Coolant System Leaks

Affected: Ford Fiesta 1.0 EcoBoost Mild Hybrid (M1DG, M1DJ, 2020-2023)
Typical failure mileage: 60,000-100,000 miles

Root cause

Plastic components within the water pump housing or thermostat assembly can degrade over time due to thermal cycling, leading to external coolant leaks and potential overheating if ignored.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative	£600-£900	£400-£600
Full Replacement - rebuilt/reconditioned engine	£4,500-£6,000	£2,800-£4,200

Our recommendation

The MHEV 1.0 EcoBoost is a robust unit. If you experience coolant leaks or minor running issues, a targeted specialist repair is highly cost-effective. Full engine replacement is rarely needed unless the engine has suffered severe neglect, prolonged overheating, or rare internal mechanical failure.

Carbon Buildup & Minor Oil Dilution

Affected: Ford Fiesta 1.0 EcoBoost Mild Hybrid (M1DG, M1DJ, “M1DG” or “M1DJ” 2020-2023)
Typical failure mileage: 50,000-90,000 miles

Root cause

Direct fuel injection combined with frequent short, cold journeys can lead to fuel diluting the engine oil and carbon accumulating on intake valves. The MHEV system's frequent engine starts can sometimes exacerbate this if the engine rarely reaches full operating temperature.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative	£300-£500	£150-£300
Full Replacement - rebuilt/reconditioned engine	£4,500-£6,000	£2,800-£4,200

Our recommendation

-> Compare rebuilt M1DG Ford Fiesta 1.0 EcoBoost Mild Hybrid engine prices

Don't Let Engine Failure Write Off Your Ford Fiesta 1.0 EcoBoost Mild Hybrid

Don't accept main dealer replacement quotes that can easily exceed £5,000. By comparing prices through EnginesMarket, you access vetted UK specialists who supply rebuilt Ford Fiesta 1.0 EcoBoost Mild Hybrid engines with upgraded components, nationwide delivery, and a minimum 12-month unlimited-mileage warranty.

Compare Ford Fiesta 1.0 EcoBoost Mild Hybrid Engine Replacement Prices Now ->

FAQ

Ford Fiesta 1.0 EcoBoost Mild Hybrid Engine ReplacementFrequently Asked Questions

Everything Ford Fiesta 1.0 EcoBoost Mild Hybrid owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

A full rebuilt or reconditioned Ford Fiesta 1.0 EcoBoost Mild Hybrid engine typically costs between £1,800 and £4,200 for the unit itself, depending on the condition and level of rebuild.

Used engines start from around £700.
Reconditioned units range from £1,800 to £3,000.
Fully rebuilt engines with warranties cost £2,800 to £4,200.

-> Compare Ford Fiesta 1.0 EcoBoost Mild Hybrid engine prices today.

No. This is the most significant advantage of the Mild Hybrid variant. Ford switched from the problematic "wet" timing belt to a durable, traditional timing chain for the MHEV models introduced from 2020 onwards.

This eliminates the catastrophic oil starvation risk associated with pre-2019 1.0 EcoBoost engines.
The chain-driven design is significantly more robust and reliable long-term.

-> Confirm your exact Ford Fiesta 1.0 EcoBoost Mild Hybrid engine code by entering your registration.

Yes, absolutely. The Mk8 Mild Hybrid variants hold strong residual values, typically ranging from £8,000 to £16,000 depending on trim and mileage.

A £2,800-£4,200 rebuilt engine represents a fraction of the vehicle's total value.
Replacing the engine preserves the car's efficiency, low tax band, and resale value far better than part-exchanging a non-running example.

-> Check if your Ford Fiesta 1.0 EcoBoost Mild Hybrid is a candidate for replacement.

While catastrophic failure is rare, owners may occasionally notice minor issues related to the cooling system or direct injection.

Unexplained coolant loss or a sweet smell from the engine bay, indicating a water pump or thermostat housing leak.
Slight rough idling or reduced fuel economy, which can point to carbon buildup on the intake valves.

-> Get a diagnostic quote from a Ford Fiesta 1.0 EcoBoost Mild Hybrid specialist.

Why Choose Us

Compare Ford Fiesta 1.0 EcoBoost Mild Hybrid Engine Prices Today

Comparing quotes is completely free and carries no obligation. By entering your registration, you ensure that every quote you receive is precisely matched to your Ford Fiesta 1.0 EcoBoost Mild Hybrid’s exact engine code, saving you from costly compatibility errors and main dealer markups.

100+100+ Ford Fiesta 1.0 EcoBoost Mild Hybrid engines supplied through our network

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