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 Toyota Sai engine specialists. Compare reconditioned and rebuilt prices for 2AZ-FXE - 2.4L hybrid engine covered. Get specialist quotes for your Sai.
Rebuilt units from £2,145
Common codes: 2AR-FXE, AZK10
Rebuilt units from £1,450
Common codes: 2AR-FXE-INV, AZK10-PCU
Rebuilt units from £3,450
Common codes: 2AR-FXE-THS, AZK10-HYB

🔒 Secure enquiry - no spam, no pressure. Genuine quotes only from vetted UK Toyota Sai hybrid specialists.
Most replacements completed within 3-5 days.
The table below shows typical UK rebuilt engine costs across Toyota Sai variants - compare failure causes, engine codes, fuel types, and price ranges to benchmark what UK drivers are paying for this grey import hybrid.


Customer Reviews
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Toyota Sai 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 Toyota Sai 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 Toyota Sai 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 Toyota Sai variants.
Extracted from electrified powertrains and hybrid engine families used in Toyota Sai variants.
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 Toyota Sai engine specialists. Every rebuilt engine comes with a 12-month unlimited mileage warranty.
The Toyota Sai's sole 2AR-FXE hybrid powertrain is generally reliable, but UK grey import owners commonly report inverter coolant pump failure, electric water pump...
Every rebuilt engine includes a minimum 12-month unlimited mileage warranty.
Why 2AR-FXE Engines Lose Power
Production Years: 2009 - 2017
Engine: 2AR-FXE
Typical failure window
The inverter's internal electric coolant pump fails, causing the hybrid system to overheat and enter limp mode or shut down completely.
| Repair Tier | Dealer Price | Specialist Price | What It Involves | Longevity / Suitability |
|---|---|---|---|---|
Minor - Coolant Pump Replacement Minor | £850 - £1,400 | £550 - £950 | Replace inverter coolant pump only, flush cooling loop | Viable only if caught early before inverter damage |
Intermediate - Inverter Refurbishment Intermediate | £1,800 - £3,200 | £1,200 - £2,100 | Refurbish inverter assembly, replace pump and sensors | Good option if inverter electronics undamaged |
Full Replacement - Rebuilt 2AR-FXE with Inverter Best Value | £4,500 - £7,800 | £2,895 - £4,200 | Supply & fit complete rebuilt hybrid engine with verified inverter | Best value for high-mileage Sai; includes 12-month warranty |
If your Sai shows inverter overheat warnings but still runs, a pump-only repair may suffice. However, on imports over 80k miles, we recommend a rebuilt 2AR-FXE with verified inverter to avoid repeat failures and protect residual value.
The Toyota Sai's 2AR-FXE hybrid is a sophisticated system, but common failures like inverter pump issues, oil consumption, and electric water pump faults can be addressed cost-effectively through EngineMarket. Compare prices from trusted UK hybrid specialists, all supplying rebuilt engines with upgraded components and a 12-month unlimited mileage warranty. Get back on the road without the main dealer premium.
Compare Toyota Sai Engine Replacement Prices Now →Every Toyota Sai engine type is available through our UK network with typical price ranges based on the 2AR-FXE hybrid code, AZK10 chassis and your budget.
Complete hybrid engine replacement service including supply of rebuilt 2AR-FXE, specialist installation, calibration and post-fit diagnostics at certified UK garages.
Every displacement fitted to the Toyota Sai is listed below, with compatible 2AR-FXE engine codes, production years and common failure notes for grey import owners.
The sole engine option for the Toyota Sai (AZK10 chassis), this 2.4L Atkinson-cycle petrol hybrid with THS II system powered all UK grey imports from 2009-2017, delivering exceptional fuel economy and smooth electric-assist driving.
| ENGINE CODE(S) | 2AR-FXE, AZK10 |
| COMPATIBLE MODELS (UK) | Sai C, Sai S, Sai G, Sai G L Selection, Sai C Premium, Sai S Premium |
| PRODUCTION YEARS | 2009-2017 |
Inverter coolant pump failure, electric water pump wear, oil consumption on high-mileage units
Not sure which engine size your Toyota Sai needs- Enter your registration number above - we'll identify the exact displacement, engine code and compatible replacement options instantly. All engines supplied through EngineMarket include a 12-month unlimited mileage warranty from UK Toyota Sai specialists.
Toyota Sai Engines Fuel Type
Choose your Toyota Sai engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early Sai C imports to the latest Sai G L Selection.
The Toyota Sai was offered exclusively with the 2AR-FXE 2.4L Atkinson-cycle petrol hybrid with THS II system across all UK grey imports from 2009-2017.
Not sure which fuel type your Toyota Sai has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a 12-month unlimited mileage warranty from UK Toyota Sai specialists.
This section covers all major engine changes across the Toyota Sai's 2009-2017 production timeline, organised so grey import owners can quickly identify their 2AR-FXE engine and compare rebuilt prices from UK specialists.
Toyota Sai hybrid engine replacement costs typically range from £1,245 for a used JDM import unit to £3,450 for a fully rebuilt 2AR-FXE with warranty, supply only. Supply & fit adds £650-£1,200 depending on location and garage.
All Toyota Sai models (AZK10 chassis, 2009-2017) use the sole 2AR-FXE 2.4L Atkinson-cycle petrol hybrid engine with THS II system. Use your VIN or registration to confirm exact variant compatibility.
Yes, when sourced from a reputable UK hybrid specialist with proper bench testing, hybrid system verification and a comprehensive warranty covering inverter, electric motors and hybrid ECU components.
Supply-only delivery typically takes 1-3 working days for in-stock 2AR-FXE units. Full supply & fit requires 5-7 working days due to hybrid system calibration and post-install diagnostic procedures.
Rebuilt Toyota Sai engines supplied through EngineMarket include a 12-month unlimited mileage warranty covering the engine block, inverter assembly, MG1/MG2 electric motors and hybrid ECU components.
Yes, the Lexus HS 250h (ANF10 chassis) uses the identical 2AR-FXE hybrid system, making engines fully interchangeable between Sai AZK10 and HS 250h ANF10 with no modification required.
Most Toyota Sai hybrid failures stem from inverter coolant pump failure, electric water pump wear, or oil consumption on high-mileage 2AR-FXE units - all addressable with rebuilt engines featuring upgraded components.
If repair costs exceed 60% of a rebuilt engine price, or your Sai has over 80k miles, replacement with a rebuilt 2AR-FXE offering upgraded components and warranty protection typically delivers better long-term value.
Yes, EngineMarket's network supplies Toyota Sai 2AR-FXE engines nationwide UK with next-day delivery available on in-stock units to mainland UK, with safe hybrid-packaging and documentation support for grey imports.
All Toyota Sai models use the 2AR-FXE 2.4L hybrid engine, but enter your registration on our checker or call our import specialists with your AZK10 chassis code for instant variant matching and compatibility confirmation.
Why Choose Us
Join thousands of UK drivers who compare Toyota Sai engine prices through our network of trusted hybrid specialists - every rebuilt and reconditioned 2AR-FXE unit backed by a 12-month unlimited mileage warranty and nationwide delivery.
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See prices, hybrid warranty terms, and supply & fit options side-by-side before you commit to your 2AR-FXE replacement.
UK Engine Replacement Services for Toyota Sai
Covering all Sai AZK10 variants from early imports to late-production models, with supply-only or full hybrid-certified supply & fit available nationwide.

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