Mirai Fuel Cell Stack Replacement
from £4,000 to £15,000
Rebuilt units from £4,000 · Common components: FC Stack, MEA Assembly, Stack Controller
Toyota ENGINE MARKETPLACE
Toyota Mirai Fuel Cell Replacement - Compare Quotes from UK Specialists
Get quotes from trusted UK Toyota Mirai specialists. Compare fuel cell stack and electric motor prices - hydrogen fuel cell system covered. Get specialist quotes for your Mirai.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Mirai Hydrogen Tank Replacement
from £2,000 to £4,000
Rebuilt units from £2,000 · Common components: Type IV Tank, Pressure Regulator, Recirculation Pump
Mirai DC/DC Converter & Power System
from £800 to £4,000
Rebuilt units from £800 · Common components: DC/DC Converter, Power Converter, Hydrogen Injector
Instant engine replacement quote - 100% free, no obligation
Engine replacement near me - UK-wide specialist network
Compare reconditioned, rebuilt & used engine prices
Supply & fit available - parts and labour from vetted specialistsInstant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialistsHow It Works
3 Simple Steps3 Simple Stepsto Finding the Best Toyota Mirai Replacement Engineto Finding the Best Toyota Mirai Replacement Engine
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers
Most replacements completed within 3-5 days.
Live UK Engine Market Data
What Are UK Drivers Paying for Toyota Mirai Engine Replacement
The table below shows typical UK rebuilt fuel cell system costs across Toyota Mirai variants - compare failure causes, component codes, hydrogen system specs, and price ranges to benchmark what UK drivers are paying.
Average Market Prices
↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
Trusted by Toyota Mirai Owners Across the UK
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Toyota Mirai engines through EngineMarket.
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“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
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“Got three quotes within an hour and chose the best deal easily. The whole process was quick, clear and stress-free.”
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Variants We Cover
Toyota Mirai Engine ReplacementAll Variants Covered
Toyota Mirai First Generation Fuel Cell Replacement
JPD10 FC
Rebuilt Engines: £4,000-£12,000
Toyota Mirai Second Generation Fuel Cell Replacement
JPD20 FC
Rebuilt Engines: £6,000-£15,000
Toyota Mirai Design Trim Fuel Cell System
Base Model FC Stack
Rebuilt Engines: £4,000-£15,000
Toyota Mirai Design Plus Fuel Cell Replacement
Mid-Spec
Rebuilt Engines: £4,500-£14,000
Toyota Mirai Design Premium Pack FC System
Top-Spec
Rebuilt Engines: £5,000-£15,000
Toyota Mirai Hydrogen Tank Replacement
Type IV 700bar Tank
Rebuilt Engines: £2,000-£4,500
Not sure which variant your Toyota Mirai is- Enter your registration number above - we'll identify the exact generation, fuel cell system and compatible replacement options instantly.
Mirai
Engine Codes
Toyota Mirai Engine CodesFull Technical Specifications & Replacement Guide
Every fuel cell and hydrogen system component fitted to the Toyota Mirai across both generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK FCEV specialists. Select any component to compare quotes.
Petrol Engines
Extracted from detailed petrol and performance engine families across Toyota Mirai variants.
DCDC-BOOST-01 - DC/DC Boost Converter
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
First Generation trims
Avg. rebuilt price
£800 - £2,500
Supply only
Technical specifications
- Fuel type
- Hydrogen FCEV
- Engine size
- N/A (Power Electronics)
- Power output
- N/A
- Years fitted
- 2015-2024
Common failures
- ●Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
- ●Confirm exact engine code and fitment before ordering.
- ●Ask for warranty and supply & fit terms.
Not sure which engine code?
Can't find your component code- Enter your registration number above - we'll instantly identify the exact fuel cell system, its technical specifications, and live replacement prices from UK Toyota Mirai FCEV specialists. Every rebuilt component comes with a minimum 12-month unlimited mileage warranty.
Mirai
Common Problems
Toyota Mirai Engine Problems - What It Costs to Fix & When Replacement Makes Sense
The Toyota Mirai's hydrogen fuel cell system is generally reliable but has documented failure points that drive replacement enquiries. The JPD10/JPD20 fuel cell stacks and DC/DC converters dominate UK repair demand. Every rebuilt fuel cell system supplied through EngineMarket includes upgraded internal components designed to address original failure points...
Fuel Cell Stack Degradation - Why Mirai FC Stacks Lose Power Over Time
Fuel Cell Stack Degradation
Most affected vehicles
Toyota Mirai DesignDesign Plus
Toyota Mirai Design, Design Plus, Design Premium Pack (2015-2024, JPD10-FC & JPD20-FC)
Failure mileage range
40,000-70,000 miles
Typical failure window
Root cause
Membrane electrode assembly wear and catalyst layer degradation reduce proton exchange efficiency, triggering warning lights and power loss.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Diagnostic & Stack Conditioning - Software reset and performance calibration | £300 - £800 | £150 - £400 | Dealer-level diagnostics, stack conditioning cycle, ECU reflash | Temporary mitigation; does not reverse physical degradation |
| MEA Module Replacement - Replace membrane electrode assembly only | £2,500 - £6,000 | £1,800 - £4,000 | Partial stack disassembly, MEA replacement, seal renewal, bench testing | Viable if stack housing is intact; 20,000-40,000 mile extension |
| Full Replacement - Rebuilt FC Stack - Complete refurbished fuel cell stack unit | £4,000 - £15,000 | £3,200 - £12,000 | Supply & fit of rebuilt stack, upgraded MEA, full system calibration, 12-month warranty | Recommended for high-mileage vehicles; restores near-new performance |
Our recommendation
On a Mirai valued under £15,000, a full rebuilt FC stack often represents better long-term value than partial repairs. For newer second-gen models under warranty, pursue dealer conditioning first.
Compare rebuilt JPD10/JPD20 fuel cell stack prices for your Toyota MiraiReplacement Engine Options
Toyota Mirai Engine TypesOptions, Costs & What to Expect
Every fuel cell system component type is available through our UK FCEV specialist network with typical price ranges based on Mirai generation, component code and budget.
Toyota Mirai Reconditioned Fuel Cell Stacks (Recon)£4,500 - £13,000((supply only))
Toyota Mirai Rebuilt Fuel Cell Systems£5,000 - £15,000((supply only))
Toyota Mirai Used Fuel Cell Components£2,000 - £8,000((supply only))
Toyota Mirai Remanufactured Hydrogen Tanks£2,200 - £4,200((supply only))
Toyota Mirai Refurbished Power Electronics£600 - £3,500((supply only))
Compare Toyota Mirai engine prices with vetted UK suppliers
All fuel cell components 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 FCEV specialist network and depend on exact component code, generation, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Toyota Mirai within hours.
Engine Sizes
Toyota Mirai Engines by SizeFind the Right Displacement for Your Variant
Every fuel cell power output and hydrogen system specification fitted to the Toyota Mirai is listed, with compatible component codes, generations and common failure notes.
The 134kW fuel cell system powers all UK Toyota Mirai variants across both generations, delivering 182hp equivalent output with zero tailpipe emissions. First-generation JPD10 stacks (2015-2020) established Toyota's production FCEV technology, while second-generation JPD20 units (2021-present) feature refined thermal management and improved durability.
⚙
Engine Code(s)
JPD10-FC, JPD20-FC, H2-TANK-700, DCDC-BOOST-01
▣
Compatible Models (UK)
Design, Design Plus, Design Premium Pack
ϟ
Power output
Verified by registration
△
Common Failure Points
FC stack MEA degradation, DC/DC converter overvoltage, hydrogen tank seal leaks
Production Years: Gen 1: 2015-2020; Gen 2: 2021-2024
Get quotes for Toyota Mirai 134kW hydrogen FCEV systemsToyota Mirai Engines Fuel Type
Toyota Mirai Engines by Fuel Type
Choose your Toyota Mirai fuel cell system by generation to compare realistic replacement prices, known issues, and compatible UK FCEV specialist supply options - from early First Generation to the latest Second Generation.
Toyota Mirai Hydrogen Fuel Cell (FCEV) Systems
DieselAll UK Toyota Mirai variants use a 134kW hydrogen fuel cell electric powertrain with 700bar Type IV hydrogen storage; replacement demand focuses on FC stack degradation and power electronics failures.
Common Toyota Mirai FCEV Component Families
- •JPD10-FC - First-gen FC stack (2015-2020), MEA degradation risk at 50k miles
- •JPD20-FC - Second-gen refined FC stack (2021-present), improved thermal management
- •H2-TANK-700 - 700bar Type IV hydrogen storage, seal leakage common at high mileage
Found In
- •First Generation (2015-2020) - JPD10-FC, H2-TANK-700, DCDC-BOOST-01
- •Second Generation (2021-2024) - JPD20-FC, H2-TANK-700B, PCU-INV-02
Known For
- •Zero tailpipe emissions with water vapour only
- •FC stack warning light typically appears around 50,000 km / 3 years
- •DC/DC converter overvoltage causes sudden shutdowns on first-gen models
Typical FCEV Models
- •Toyota Mirai Design
- •Toyota Mirai Design Plus
- •Toyota Mirai Design Premium Pack
●
Important Notes
- •No petrol, diesel or hybrid variants of the Toyota Mirai exist in the UK market
- •FC stack and hydrogen tank replacement requires FCEV-certified specialists only
- •Genuine Toyota parts and warranty coverage are critical for high-cost FCEV repairs
Toyota Mirai Hydrogen Fuel Cell (FCEV) Systems
DieselAll UK Toyota Mirai variants use a 134kW hydrogen fuel cell electric powertrain with 700bar Type IV hydrogen storage; replacement demand focuses on FC stack degradation and power electronics failures.
Common Toyota Mirai FCEV Component Families
- •JPD10-FC - First-gen FC stack (2015-2020), MEA degradation risk at 50k miles
- •JPD20-FC - Second-gen refined FC stack (2021-present), improved thermal management
- •H2-TANK-700 - 700bar Type IV hydrogen storage, seal leakage common at high mileage
Found In
- •First Generation (2015-2020) - JPD10-FC, H2-TANK-700, DCDC-BOOST-01
- •Second Generation (2021-2024) - JPD20-FC, H2-TANK-700B, PCU-INV-02
Known For
- •Zero tailpipe emissions with water vapour only
- •FC stack warning light typically appears around 50,000 km / 3 years
- •DC/DC converter overvoltage causes sudden shutdowns on first-gen models
Typical FCEV Models
- •Toyota Mirai Design
- •Toyota Mirai Design Plus
- •Toyota Mirai Design Premium Pack
●
Important Notes
- •No petrol, diesel or hybrid variants of the Toyota Mirai exist in the UK market
- •FC stack and hydrogen tank replacement requires FCEV-certified specialists only
- •Genuine Toyota parts and warranty coverage are critical for high-cost FCEV repairs
Not sure which fuel cell system your Toyota Mirai has- Enter your registration number above to instantly identify your generation, component codes and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Toyota Mirai FCEV specialists.
Engine YearsGet quotes for 2015-2020 Toyota Mirai fuel cell replacement →
Toyota Mirai Engines by YearWhat Was Fitted & WhenToyota Mirai Engines by Year - What Was Fitted & When
This section covers all major fuel cell system changes across the Toyota Mirai's UK production timeline, organised so owners can quickly identify their generation and compare rebuilt component prices from FCEV specialists.
⚙Key Changes
- ✓2015: UK launch of First Generation Mirai with JPD10-FC fuel cell stack
- ✓2017: Minor software updates to FC stack control logic
- ✓2019: Updated hydrogen tank seal specifications to reduce leakage risk
▣Main Engines
JPD10-FC- 134kW hydrogen FCEV (Design / Design Plus / Design Premium Pack)
H2-TANK-700- 700bar Type IV hydrogen storage (All trims)
DCDC-BOOST-01- DC/DC boost converter (All trims)
▰Popular Models
- •Toyota Mirai Design
- •Toyota Mirai Design Plus
- •Toyota Mirai Design Premium Pack
🔧Known For
- ✓Pioneering UK FCEV with zero tailpipe emissions
- ✓FC stack MEA degradation warnings common around 50,000 km
- ✓DC/DC converter overvoltage causing sudden system shutdowns
- ✓High replacement costs relative to vehicle depreciation
Engine Codes Covered:
JPD10-FCH2-TANK-700DCDC-BOOST-01PCU-INV-01Not sure which year your Toyota Mirai was built- Enter your registration number and we'll identify the exact generation, fuel cell system, and compatible replacement options instantly - all backed by a minimum 12-month warranty from UK Toyota Mirai FCEV specialists.
FAQ