Jimmy
“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
Get quotes from trusted UK Peugeot iOn EV specialists. Compare electric motor and battery system prices - Y4F1 & N7R drive units covered. Find the best value for your budget.
Rebuilt units from £800
Common codes: Y4F1, MCU-001, TCU-002
Rebuilt units from £600
Common codes: MCU-001, MCU-002, INV-001
Rebuilt units from £700
Common codes: TCU-001, TCU-002, GCM-001

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Most replacements completed within 3-5 days.
The table below shows typical UK rebuilt motor costs across Peugeot iOn variants - compare failure causes, motor codes, power ratings, and price ranges to benchmark what UK drivers are paying.


Customer Reviews
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Peugeot iOn engines through EngineMarket.
Jimmy
“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
Pete
“Got three quotes within an hour and chose the best deal easily. The whole process was quick, clear and stress-free.”
Sophie
“I wasn't sure what I needed, but they helped me identify the right engine and connected me with a trusted garage.”
Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
- Jimmy, London
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Not sure which variant your Peugeot iOn is- Enter your registration number above - we'll identify the exact sub-model, motor code and compatible replacement options instantly.
Every motor code fitted to the Peugeot iOn across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any motor code to compare quotes.
Extracted from detailed petrol and performance engine families across Peugeot iOn variants.
Extracted from detailed petrol and performance engine families across Peugeot iOn variants.
Can't find your motor code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Peugeot iOn engine specialists. Every rebuilt motor comes with a Peugeotmum 12-month unlimited mileage warranty.
The Peugeot iOn's electric powertrain is generally robust, but three issues dominate replacement enquiries: Motor Control Unit (MCU) failure on 2011-2012 models,...
Every rebuilt engine includes a minimum 12-month unlimited mileage warranty.
Why Early Peugeot iOn Models Lose Power
Production Years: 2011 - 2012
Engine: Y4F1 motor with MCU-001
Typical failure window
Internal power electronics failure in the inverter module, exacerbated by thermal cycling and known manufacturing defect covered by recall ZZZ.
| Repair Tier | Dealer Price | Specialist Price | What It Involves | Longevity / Suitability |
|---|---|---|---|---|
Diagnostic & Software Reset - Check for fault codes and attempt reprogramming Minor | £150 - £300 | £95 - £200 | OBD2 diagnostic scan, software update attempt | Only viable if failure is software-related; temporary fix for hardware faults |
MCU Replacement - Reconditioned Unit - Swap faulty control module Minor | £1,200 - £2,000 | £600 - £1,200 | Remove old MCU, install tested reconditioned unit with updated firmware | Restores full function; 12-month warranty covers recurrence |
Full Drive Unit Replacement - Motor + MCU assembly Minor | £2,500 - £4,000 | £1,500 - £2,500 | Replace entire electric motor and control unit assembly | Most comprehensive solution; recommended for high-mileage vehicles |
For 2011-2012 iOn models showing MCU-related faults, a reconditioned MCU replacement offers the best value. Given the iOn's low residual value (£2,000-£3,500), spending over £1,500 on repairs warrants careful consideration against vehicle worth.
Every electric motor type for the Peugeot iOn is available through our UK network, with typical price ranges based on variant, motor code Y4F1 and budget.
Complete replacement service including motor supply, high-voltage certified fitting and post-installation diagnostics.
Every electric motor specification fitted to the Peugeot iOn is listed, with compatible motor codes, production years and common failure notes for accurate replacement matching.
The sole powerplant for the Peugeot iOn, this permanent magnet synchronous motor delivers 48 PS (35 kW) through a single-speed reduction gearbox. Shared with the Mitsubishi i-MiEV and Citroën C-Zero platform, it offers quiet, instant torque delivery with minimal maintenance requirements compared to combustion engines.
| COMPATIBLE MODELS (UK) | Active (2010-2016), Access (2010-2015), Allure (2011-2017), Enrolment |
| PRODUCTION YEARS | 2012-2016 |
MCU recall ZZZ on 2011-2012 models, TCU grinding noises, 12V battery triggering HV errors
Not sure which motor specification your Peugeot iOn needs- Enter your registration number above - we'll identify the exact power rating, motor code and compatible replacement options instantly. All motors supplied through EngineMarket include a Peugeotmum 12-month unlimited mileage warranty from UK Peugeot iOn specialists.
Fuel Type
Choose your Peugeot iOn powertrain by type to compare realistic replacement prices, known issues, and compatible UK supply options - from the standard Y4F1 motor to control unit replacements.
The Peugeot iOn is exclusively battery-electric, using a single 35kW permanent magnet synchronous motor shared across all variants and production years.
Not sure which powertrain type your Peugeot iOn has- Enter your registration number above to instantly identify your motor code, battery system and compatible replacement options - all backed by a Peugeotmum 12-month unlimited mileage warranty from UK Peugeot iOn specialists.
This section covers all motor specifications across the Peugeot iOn's production timeline, organised so owners can quickly identify their motor code and compare rebuilt prices from UK EV specialists.
Rebuilt Peugeot iOn electric motors typically cost £800-£2,000 supply-only, depending on whether you need the full Y4F1 motor unit or just the MCU/TCU control module. Supply & fit adds £300-£600 labour.
Yes, recall ZZZ for MCU failure on 2011-2012 Peugeot iOn models remains active. Contact Peugeot with your VIN to check eligibility for free repair or replacement.
Most HV errors on the iOn are triggered by the 12V auxiliary battery failing, not the main traction battery. Replacing the £95 12V battery often resolves the fault without expensive HV repairs.
No. Peugeot iOn high-voltage systems operate at over 300V DC and require IMI Level 3 certified technicians. Attempting DIY repairs risks severe electric shock and voids warranties.
The Y4F1 motor itself often exceeds 100,000 miles with minimal maintenance. Most failures involve control electronics (MCU/TCU) or the 12V auxiliary system, not the motor windings.
With iOn values typically £2,000-£3,500, spending £1,500+ on motor repair requires careful consideration. For reliable daily transport, a rebuilt motor with warranty often makes sense versus scrapping.
MCU failure causes loss of power or charging capability; TCU failure causes grinding noises, slipping or emergency mode. Both require specialist diagnosis but have different repair approaches.
Yes. The iOn, Mitsubishi i-MiEV and Citroën C-Zero share the identical Y4F1 motor platform, MCU and TCU components. Parts are cross-compatible across all three models.
The Y4F1 motor code is stamped on the motor housing near the rear mounting point. MCU/TCU codes are on labels attached to the control unit casings. Your VIN can also decode the exact specification.
All rebuilt motors supplied through EngineMarket include a minimum 12-month unlimited mileage warranty. Some specialists offer extended 24-month coverage for an additional cost.
Why Choose Us
Join thousands of UK drivers who compare Peugeot iOn motor prices through our network of trusted specialists - every rebuilt and reconditioned unit backed by a Peugeotmum 12-month unlimited mileage warranty and nationwide delivery.
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UK Electric Motor Replacement Services for Peugeot iOn
Covering all variants from Active to Allure, with supply-only or full supply & fit available nationwide.

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