Clarity PHEV Hybrid Engines
from £1,395 to £4,200
Rebuilt units from £1,395 · Common codes: LEB3, LEB31, LEB3A
Get quotes from trusted UK Honda Clarity specialists. Compare reconditioned and rebuilt prices for LFA and MF8 - hydrogen fuel cell & plug-in hybrid covered. Get specialist quotes for your Clarity.
Clarity PHEV Hybrid Engines
from £1,395 to £4,200
Rebuilt units from £1,395 · Common codes: LEB3, LEB31, LEB3A
Clarity PHEV Early Production Engines
from £1,395 to £3,900
Rebuilt units from £1,395 · Common codes: LEB3, LEB31
Clarity PHEV Facelift Engines
from £1,595 to £4,500
Rebuilt units from £1,595 · Common codes: LEB3A, LEB3, LEB31

Most replacements completed within 3-5 days.
Typical UK rebuilt Honda Clarity engine costs by variant, failure cause, code and size - compare market ranges for grey import PHEV replacements.


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Not sure which variant your Honda Clarity is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Every engine code fitted to the Honda Clarity across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Extracted from electrified powertrains and hybrid engine families used in Honda Clarity variants.

LEB3 - 1.5L PHEV
Main replacement demand comes from cooling, battery-support and high-voltage control faults.
Compatible variants
Avg. rebuilt price
£1,395 - £2,400
Supply only
Technical specifications
Common failures
Not sure which engine code?
Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Honda Clarity engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Honda Clarity PHEV generally demonstrates strong baseline reliability, but its complex 1.5L LEB3, LEB31, and LEB3A Atkinson-cycle hybrid powertrains face predictable wear points under prolonged UK grey-import usage. High-voltage interface stress, thermal cycling in charging modules, and e-CVT alignment fatigue dominate replacement enquiries. Every...
Honda Clarity HV-Mode High Revs & Power Loss
Most affected vehicles
Honda Clarity Plug-in Hybrid Base & Touring (2017-2021, LEB3, LEB31, LEB3A)
Failure mileage range
50,000 - 75,000 miles
Typical failure window
Root cause
Hybrid control module calibration drift combined with inverter thermal degradation causes the petrol engine to over-rev without effectively transferring torque to the driveline, creating a "rubber-band" drivability loss.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Software Calibration & Inverter Reset | £250 - £450 | £150 - £250 | Official Honda diagnostic flash, inverter thermal paste replacement, hybrid control logic reset | Viable only if caught before mechanical strain occurs; typically extends life by 15-20k miles |
| Full Replacement - Rebuilt LEB3 PHEV Engine | £6,000 - £8,500 | £2,800 - £4,200 | Supply & fit of rebuilt Atkinson-cycle engine with upgraded hybrid control interfaces, bench testing, and 12-month warranty | Permanent resolution; addresses inverter wear, recalibrated for UK grey-import EV cycling |
Our recommendation
If the high-rev symptom appears only during cold starts or short EV bursts, a specialist diagnostic reset and inverter refresh may suffice. However, if the Clarity has logged persistent hybrid system fault codes or exhibits continuous power loss under acceleration, the internal inverter and planetary gears have likely suffered fatigue. In this scenario, a full rebuilt LEB3 unit with verified e-CVT sync is significantly more cost-effective than chasing intermittent electrical faults.
Compare rebuilt LEB3 Honda Clarity engine prices for verified PHEV replacements
Every Honda Clarity engine type is available through our UK network with typical price ranges based on LEB3 variant, chassis code and budget.
Compare Honda Clarity engine prices with vetted UK suppliers
All engine types include a minimum 12-month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Honda Clarity within hours.

Every displacement fitted to the Honda Clarity is listed below with compatible engine codes, production years and common failure notes specific to UK grey import PHEV variants.
The 1.5L Atkinson-cycle plug-in hybrid powertrain is the sole engine option fitted to the Honda Clarity across its 2017-2021 production run, combining a naturally aspirated petrol unit with dual electric motors and an e-CVT transmission for seamless hybrid operation. This LEB3-series engine was engineered specifically for PHEV applications, prioritising thermal efficiency and high-voltage system integration over conventional performance metrics, making it the defining powertrain for UK grey import Clarity owners seeking replacement options.
Engine Code(s)
LEB3, LEB31, LEB3A
Compatible Models (UK)
Clarity Plug-in Hybrid Base (2017-2021), Clarity Plug-in Hybrid Touring (2017-2021), Clarity PHEV FWD e-CVT grey import variants
Power output
Verified by registration
Common Failure Points
HV-mode high-rev power loss, charging port sync failures, 12V accessory battery drain affecting hybrid enable
Production Years: Check by registration
Enquire about Honda Clarity 1.5L hybrid engine availability
Choose your Honda Clarity engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early 2017 LEB3 Base to the latest 2021 LEB3A Touring PHEV grey import variants.
The Honda Clarity was exclusively offered as a 1.5L Atkinson-cycle plug-in hybrid across its 2017-2021 production, with all UK units sourced as grey imports requiring specialist LEB3-series engine compatibility verification.
Honda Clarity PHEV Engine Codes
Found In
Important Notes
The Honda Clarity was exclusively offered as a 1.5L Atkinson-cycle plug-in hybrid across its 2017-2021 production, with all UK units sourced as grey imports requiring specialist LEB3-series engine compatibility verification.
Honda Clarity PHEV Engine Codes
Found In
Important Notes
Not sure which fuel type your Honda Clarity has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Honda Clarity specialists.

This section covers all major engine changes across the Honda Clarity's 2017-2021 production timeline, organised so grey import owners can quickly identify their LEB3-series engine and compare rebuilt hybrid powertrain prices from UK specialists.
⚙Key Changes
▣Main Engines
LEB3- 1.5L PHEV (Base trim grey imports)
LEB31- 1.5L PHEV (Touring trim early production grey imports)
▰Popular Models
🔧Known For
Engine Codes Covered:
LEB3LEB31