Subaru R1 EN07D Petrol Engines
from £900 to £1,400
Rebuilt units from £1,400 · Common codes: EN07D, EN07Y, EN07U
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Subaru R1 Engine Replacement - Compare Prices & Save
Get quotes today from trusted UK Subaru R1 engine specialists. Compare prices on reconditioned, rebuilt and used engines - supply & fit available.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Subaru R1 EN07X Supercharged Engines
from £1,100 to £1,800
Rebuilt units from £1,800 · Common codes: EN07X, EN07Z, EN07V
Subaru R1 i-CVT Compatible Engines
from £950 to £1,600
Rebuilt units from £1,500 · Common codes: EN07D-CVT, EN07X-CVT, EN07U
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 Subaru R1 Replacement Engineto Finding the Best Subaru R1 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
Average Market Prices
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↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
Trusted by Subaru R1 Owners Across the UK
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Subaru R1 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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Variants We Cover
Subaru R1 Engine ReplacementAll Variants Covered
Subaru R1 S
EN07D 6L Petrol
Rebuilt Engines: £1,400-£2,200
Subaru R1 STi
EN07X 6L Petrol
Rebuilt Engines: £1,800-£2,600
Subaru R1 Aero
EN07D/EN07X 6L Petrol
Rebuilt Engines: £1,400-£2,600
Subaru R1 Limited
EN07U 6L Petrol
Rebuilt Engines: £1,500-£2,300
Subaru R1 JA Chassis
EN07D/EN07X 6L Petrol
Rebuilt Engines: £1,400-£2,600
Subaru R1 JB Chassis
EN07D/EN07X/EN07U 6L Petrol
Rebuilt Engines: £1,400-£2,600
Subaru R1 i-CVT
EN07D/EN07X 6L Petrol
Rebuilt Engines: £1,500-£2,400
Subaru R1 Manual
EN07D/EN07X 6L Petrol
Rebuilt Engines: £1,400-£2,600
Subaru R1 Japanese Import
EN 6L Petrol
Rebuilt Engines: £900-£1,800
Subaru R1 Right Hand Drive
EN 6L Petrol
Rebuilt Engines: £1,400-£2,600
Subaru R1 Pre-Facelift
EN07D/EN07X 6L Petrol
Rebuilt Engines: £1,400-£2,600
Subaru R1 Facelift
EN07D/EN07X/EN07U 6L Petrol
Rebuilt Engines: £1,400-£2,600
Not sure which variant your Subaru R1 is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
R1
Engine Codes
Subaru R1 Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Subaru R1 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.
Petrol Engines
Extracted from detailed petrol and performance engine families across Subaru R1 variants.
EN07D - 0.66L Petrol Naturally Aspirated
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
SAeroLimited (JA/JB chassis)
Avg. rebuilt price
£1,400 - £2,200
Supply only
Technical specifications
- Fuel type
- Petrol
- Engine size
- 0.66L
- Power output
- 54 hp
- Years fitted
- 2005-2010
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 engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Subaru R1 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
R1
Common Problems
Subaru R1 Engine Problems - What It Costs to Fix & When Replacement Makes Sense
The Subaru R1 relies solely on the EN07-series 0.66L petrol engine across all UK grey import variants. While generally reliable for a kei car, supercharger bearing wear on EN07X units, timing chain tensioner rattle, and oil consumption on naturally aspirated EN07D variants dominate replacement enquiries. Every rebuilt engine supplied through EngineMarket...
EN07X Supercharger Bearing Wear - Why Subaru R1 STi Engines Lose Boost
EN07X Supercharger Bearing Wear
Most affected vehicles
Subaru R1 STiSTi Aero (2006-2010
Subaru R1 STi, STi Aero (2006-2010, EN07X/EN07Z)
Failure mileage range
40,000-70,000 miles on enthusiast-driven grey imports with incomplete Japanese service history
Typical failure window
Root cause
Supercharger bearings wear from heat cycles and oil starvation; degraded seals cause whining noise, boost loss, and eventual seizure if ignored.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Intermediate - Supercharger Rebuild/Replacement | £850 - £1,450 | £550 - £950 | Remove supercharger, rebuild or replace with OEM-spec unit, oil feed line inspection | Restores boost if engine internals undamaged; requires kei car supercharger specialist knowledge |
| Full Replacement - Rebuilt EN07X Supercharged Engine | £2,600 - £3,800 | £1,800 - £2,600 | Supply & fit rebuilt EN07X with new supercharger, upgraded gaskets, 12-month warranty | Recommended if supercharger failure caused oil contamination or engine damage; peace of mind for STi owners |
Our recommendation
If your R1 STi shows only boost loss with no knocking or oil contamination, supercharger replacement at £550-£950 may suffice. However, if oil contamination occurred or mileage is high, a rebuilt EN07X at £1,800-£2,600 avoids repeat failures and protects your investment.
Compare rebuilt EN07X supercharged engine prices for your Subaru R1Replacement Engine Options
Subaru R1 Engine TypesOptions, Costs & What to Expect
Every engine type is available through the UK network with typical price ranges based on variant, engine code and budget.
Subaru R1 Reconditioned Engines (Recon)£1,400 - £2,200((supply only))
Subaru R1 Rebuilt Engines£1,500 - £2,600((supply only))
Subaru R1 Used Engines£500 - £1,200((supply only))
Subaru R1 Remanufactured Engines£2,000 - £3,200((supply only))
Subaru R1 Refurbished Engines£1,100 - £1,800((supply only))
Compare Subaru R1 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 Subaru R1 within hours.
Engine Sizes
Subaru R1 Engines by SizeFind the Right Displacement for Your Variant
Every displacement fitted to the Subaru R1 is listed, with compatible engine codes, years and common failure notes.
The 0.66L EN07-series petrol engine powered every Subaru R1 variant sold as a grey import to the UK from 2005-2010. This compact three-cylinder DOHC unit with VVT and multi-point injection delivered 54hp (EN07D) or 64hp (EN07X supercharged) while complying with Japanese kei car regulations, though supercharger bearing wear and oil consumption dominate replacement enquiries on higher-mileage imports.
⚙
Engine Code(s)
EN07D, EN07X, EN07U, EN07Y, EN07Z
▣
Compatible Models (UK)
S, Aero, Limited, STi, STi Aero (JA/JB chassis), 2005-2010
ϟ
Power output
Verified by registration
△
Common Failure Points
Supercharger bearing wear on EN07X, timing chain tensioner rattle, oil consumption on high-mileage NA units
Production Years: Check by registration
Compare Subaru R1 0.66L petrol engine pricesFuel Type
Subaru R1 Engines by Fuel Type
Choose your Subaru R1 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the economical S to the high-performance STi.
Subaru R1 Petrol Engines
PetrolThe Subaru R1 was offered exclusively with EN07-series 0.66L petrol engines across all UK grey import variants from 2005-2010.
Common Subaru R1 Petrol Engine Families
- •EN07D - naturally aspirated base unit (S, Aero), oil consumption concerns on high-mileage imports
- •EN07X - supercharged performance option (STi), bearing wear and boost loss considerations
- •EN07U - low-emission variant (Limited), revised emissions calibration for Japanese standards
Found In
- •All Variants (2005-2010) - EN07D, EN07X, EN07U across S, Aero, Limited, STi trims
Known For
- •Compact three-cylinder design delivers efficient 54-64hp within kei car displacement limits
- •EN07X supercharger bearing wear causing whining noise and boost loss after 50k miles
- •Timing chain tensioner rattle common on high-mileage units if service intervals missed
Typical Petrol Models
- •S
- •Aero
- •Limited
1 of 2
Subaru R1 Petrol Engines
PetrolThe Subaru R1 was offered exclusively with EN07-series 0.66L petrol engines across all UK grey import variants from 2005-2010.
Common Subaru R1 Petrol Engine Families
- •EN07D - naturally aspirated base unit (S, Aero), oil consumption concerns on high-mileage imports
- •EN07X - supercharged performance option (STi), bearing wear and boost loss considerations
- •EN07U - low-emission variant (Limited), revised emissions calibration for Japanese standards
Found In
- •All Variants (2005-2010) - EN07D, EN07X, EN07U across S, Aero, Limited, STi trims
Known For
- •Compact three-cylinder design delivers efficient 54-64hp within kei car displacement limits
- •EN07X supercharger bearing wear causing whining noise and boost loss after 50k miles
- •Timing chain tensioner rattle common on high-mileage units if service intervals missed
Typical Petrol Models
- •S
- •Aero
- •Limited
Subaru R1 Diesel / Hybrid Engines
MHEVNo diesel, hybrid, plug-in hybrid or electric powertrains were offered on the Subaru R1 in any market during its 2005-2010 production run.
Important Notes
- •All R1 variants use conventional petrol EN07-series engines only
- •No electrified replacement options available; focus remains on EN07D/EN07X/EN07U rebuilds
- •Grey import documentation requirements apply equally to all fuel types for UK registration
Not sure which fuel type your Subaru R1 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 Subaru R1 specialists.
Engine YearsGet quotes for 2005 Subaru R1 replacement engines →
Subaru R1 Engines by YearWhat Was Fitted & WhenSubaru R1 Engines by Year - What Was Fitted & When
This section covers all major engine changes across the Subaru R1 production timeline, organised so grey import owners can quickly identify their EN07 variant and compare rebuilt engine prices from UK specialists.
⚙Key Changes
- ✓First production year for Subaru R1 grey imports to UK
- ✓JA chassis codes introduced for all variants with EN07D/EN07X engine options
- ✓Early EN07D calibration with pre-revision piston rings requiring attention on high-mileage units
▣Main Engines
EN07D- 0.66L petrol naturally aspirated (S, Aero)
EN07X- 0.66L petrol supercharged (STi)
▰Popular Models
- •Subaru R1 S JA
- •Subaru R1 STi JA
🔧Known For
- ✓Early EN07D units may exhibit oil consumption; verify piston ring revision status
- ✓EN07X supercharger requires diligent oil change intervals to prevent bearing wear
- ✓Strong donor parts availability via shared Daihatsu/Toyota kei car platform
Engine Codes Covered:
EN07DEN07XNot sure which year your Subaru R1 was built- Enter your registration number and we'll identify the exact engine, model year, and compatible replacement options instantly - all backed by a minimum 12-month warranty from UK Subaru R1 specialists.
FAQ