Toyota Sai 2.4L Hybrid Engines
from £1,245 to £3,450
Rebuilt units from £2,145 · Common codes: 2AR-FXE, AZK10
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.
Toyota Sai 2.4L Hybrid Engines
from £1,245 to £3,450
Rebuilt units from £2,145 · Common codes: 2AR-FXE, AZK10
Toyota Sai Hybrid Inverter Units
from £895 to £2,100
Rebuilt units from £1,450 · Common codes: 2AR-FXE-INV, AZK10-PCU
Toyota Sai Complete Hybrid Powertrain
from £2,895 to £5,200
Rebuilt units from £3,450 · Common codes: 2AR-FXE-THS, AZK10-HYB

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.


Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Toyota Sai engines through EngineMarket.
4.8
★★★★★
out of 5
1,081 verified reviews
“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
“Got three quotes within an hour and chose the best deal easily. The whole process was quick, clear and stress-free.”
“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.”






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.

2AR-FXE - 2.4L Hybrid Petrol
Main replacement demand comes from cooling, battery-support and high-voltage control faults.
Compatible variants
Avg. rebuilt price
£2,145 - £3,450
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 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 issues, and oil consumption on high-mileage units. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address the original failure point - plus a...
Toyota Sai Hybrid Inverter Failure
Most affected vehicles
Toyota Sai C, S, G, G L Selection, C Premium, S Premium (2009-2017, 2AR-FXE)
Failure mileage range
60,000-90,000 miles
Typical failure window
Root cause
The inverter's internal electric coolant pump fails, causing the hybrid system to overheat and enter limp mode or shut down completely.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Coolant Pump Replacement | £850 - £1,400 | £550 - £950 | Replace inverter coolant pump only, flush cooling loop | Viable only if caught early before inverter damage |
| Intermediate - Inverter Refurbishment | £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 | £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 |
Our recommendation
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.
Compare rebuilt 2AR-FXE engine prices for your Toyota Sai
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.
Compare Toyota Sai engine prices with vetted UK suppliers
All engine types include a 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 Toyota Sai within hours.

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
Power output
Verified by registration
Common Failure Points
Inverter coolant pump failure, electric water pump wear, oil consumption on high-mileage units
Production Years: 2009-2017
Get quotes for Toyota Sai 2.4L hybrid engines
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.
Common Toyota Sai Hybrid Petrol Engine Families
Found In
Known For
Typical Hybrid Petrol Models
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.
Common Toyota Sai Hybrid Petrol Engine Families
Found In
Known For
Typical Hybrid Petrol Models
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.
⚙Key Changes
▣Main Engines
2AR-FXE- 2.4L hybrid petrol (all Sai variants)
▰Popular Models
🔧Known For
Engine Codes Covered:
2AR-FXEAZK10