How much does a Honda Accord Hybrid i-MMD engine replacement cost-

A full rebuilt or reconditioned Honda Accord Hybrid i-MMD engine typically costs between £2,500 and £4,500, including supply and fit. Rebuilt units include upgraded hybrid components and a 12-month warranty. Main dealers often charge £5,000-£7,000+ for the same replacement. Used engines are a budget alternative, starting from around £1,200.

What are the common signs of hybrid system failure in a Honda Accord Hybrid i-MMD-

Early detection of hybrid faults can prevent catastrophic damage to your Honda Accord Hybrid i-MMD powertrain. Signs include illumination of the Check Hybrid System or engine management warning light, the vehicle entering limp mode or losing power during acceleration, and unusual whining noises from the inverter or visible coolant leaks beneath the vehicle. If you notice these symptoms, get your Honda Accord Hybrid i-MMD inspected immediately.

Is it worth replacing the engine in a Honda Accord Hybrid i-MMD-

Yes, absolutely. The Honda Accord Hybrid retains exceptionally strong market values, typically ranging from £12,000 to £22,000. A full rebuilt engine replacement (£3,500-£5,000) represents a small fraction of the vehicle's total worth. Investing in a warrantied, reconditioned unit preserves the car's performance and resale value far better than a cheap, unverified used engine.

How long does a Honda Accord Hybrid i-MMD engine replacement take-

A standard Honda Accord Hybrid i-MMD engine swap typically takes 5 to 7 working days. This includes sourcing the correct LFA-H4 hybrid powertrain unit, nationwide delivery to your chosen specialist, and physical installation, hybrid system calibration, fluid top-up, and comprehensive road testing.

What is the difference between the LFA-H4 and standard Accord engines-

The LFA-H4 is a dedicated hybrid powertrain specific to the Accord i-MMD, combining a 2.0L Atkinson-cycle petrol engine with dual electric motors and a power control unit (PCU). Unlike standard K-series or R-series petrol engines, the LFA-H4 is designed for seamless electric-to-petrol transitions. It requires specialist hybrid diagnostic equipment and calibrated replacement units to ensure the high-voltage systems communicate correctly with the vehicle's ECU.

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Honda Accord Hybrid i-MMD Engine

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Common codesLFA-H4

Honda accord Hybrid i-MMD Used Engine — LFA-H4

Honda accordUsed Engine — LFA-H4

Honda accord Hybrid i-MMD Reconditioned Engine — LFA-H4

Honda accordReconditioned Engine — LFA-H4

Honda accord Hybrid i-MMD Rebuilt Engine — LFA-H4

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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

Honda Accord Hybrid i-MMD Engine History & Specs at a Glance

When the Hybrid i-MMD (Intelligent Multi-Mode Drive) was introduced to the Honda Accord lineup, it brought advanced electrification to the executive saloon, combining a highly efficient Atkinson-cycle petrol engine with dual electric motors for seamless, responsive performance.

2018
LFA-H4 (215 PS combined) introduced in the 10th generation Honda Accord Hybrid, replacing the previous generation's hybrid system with a more robust, direct-drive focused i-MMD architecture.
2021
Minor software and emissions refinements to the i-MMD system, maintaining the LFA-H4 powertrain as the sole hybrid offering until the model's eventual discontinuation in the UK market.

Every engine fitted to the Honda Accord Hybrid i-MMD is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Honda Accord Hybrid i-MMD Engine Codes Specifications & Replacement Cost

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

LFA-H4 — 2.0L Petrol Hybrid (2018-2022)

Power Output: 215 PS (combined)
Years Fitted: 2018-2022

Can’t find your exact engine code?-> Get quotes for LFA-H4 Honda Accord Hybrid i-MMD engine replacement

-> Get quotes for LFA-H4 Honda Accord Hybrid i-MMD engine replacement

Common failure points and repair options

Inverter Cooling System Leaks & High-Voltage Battery Degradation

Affected: Honda Accord Hybrid i-MMD (LFA-H4, 2018-2022)
Typical failure mileage: 80,000-120,000 miles

Root cause

The inverter coolant pump or associated seals can degrade over time, leading to coolant ingress or overheating of the power control unit (PCU). If ignored, this may trigger hybrid system shutdowns or require full powertrain replacement.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative	£800-£1,500	£500-£1,000
Full Replacement - rebuilt/reconditioned engine	£5,000-£7,000+	£3,500-£5,000

Our recommendation

For a Honda Accord Hybrid i-MMD showing early inverter cooling warnings, targeted component repair is the most financially sensible route. However, if the vehicle has suffered catastrophic PCU failure or severe hybrid system degradation, a reconditioned or rebuilt LFA-H4 unit is the most reliable long-term solution to protect your investment.

-> Compare rebuilt LFA-H4 Honda Accord Hybrid i-MMD engine prices

Don't Let Hybrid Failure Write Off Your Honda Accord Hybrid i-MMD

Ignoring inverter cooling warnings or hybrid system faults can quickly turn a manageable repair into a catastrophic powertrain failure. By comparing quotes through EnginesMarket, you secure a rebuilt or reconditioned Honda Accord Hybrid i-MMD engine with upgraded components, a minimum 12-month unlimited-mileage warranty, and nationwide delivery-often at a fraction of the main dealer's replacement premium.

Compare Honda Accord Hybrid i-MMD Engine Replacement Prices Now ->

FAQ

Honda Accord Hybrid i-MMD Engine ReplacementFrequently Asked Questions

Everything Honda Accord Hybrid i-MMD owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

A full rebuilt or reconditioned Honda Accord Hybrid i-MMD engine typically costs between £2,500 and £4,500, including supply and fit.

Rebuilt units include upgraded hybrid components and a 12-month warranty.
Main dealers often charge £5,000-£7,000+ for the same replacement.
Used engines are a budget alternative, starting from around £1,200.

-> Compare Honda Accord Hybrid i-MMD engine replacement quotes today.

Early detection of hybrid faults can prevent catastrophic damage to your Honda Accord Hybrid i-MMD powertrain.

Illumination of the "Check Hybrid System" or engine management warning light.
The vehicle entering "limp mode" or losing power during acceleration.
Unusual whining noises from the inverter or visible coolant leaks beneath the vehicle.

-> If you notice these symptoms, get your Honda Accord Hybrid i-MMD inspected immediately.

Yes, absolutely. The Honda Accord Hybrid retains exceptionally strong market values, typically ranging from £12,000 to £22,000.

A full rebuilt engine replacement (£3,500-£5,000) represents a small fraction of the vehicle's total worth.
Investing in a warrantied, reconditioned unit preserves the car's performance and resale value far better than a cheap, unverified used engine.

-> Check if your Honda Accord Hybrid i-MMD replacement is viable.

The LFA-H4 is a dedicated hybrid powertrain specific to the Accord i-MMD, combining a 2.0L Atkinson-cycle petrol engine with dual electric motors and a power control unit (PCU).

Unlike standard K-series or R-series petrol engines, the LFA-H4 is designed for seamless electric-to-petrol transitions.
It requires specialist hybrid diagnostic equipment and calibrated replacement units to ensure the high-voltage systems communicate correctly with the vehicle's ECU.

-> Get quotes for your specific Honda Accord Hybrid i-MMD engine code.

Why Choose Us

Compare Honda Accord Hybrid i-MMD Engine Prices Today

Comparing quotes is completely free and specific to your exact vehicle. Simply enter your registration to confirm your exact Honda Accord Hybrid i-MMD engine code, and we will match you with vetted UK specialists offering competitive, transparent prices on used, reconditioned, and rebuilt hybrid units.

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