Before you buy a used Toyota Prius (III).

2009–2015 · Hybrid / Plug-in hybrid · 2 engines

Taken only from Testigo's sourced sheets. Use it to question the seller and on the test drive: it does not confirm that any particular car is affected.

M 93 · CC BY-SA 3.0 DE · Wikimedia Commons · Photo source

The essentials.

4 documented, sourced faults across its 2 engines.
2 of them depend on the equipment or the production date: ask what this car has.
6 official recalls on record: ask for the chassis number (VIN) and confirm they have been done.
According to the data we have, the engine with the fewest documented faults is the Prius Plug-in (Plug-in hybrid).

Typical faults by engine

The period and mileage are those mentioned by each sheet's sources. They are not a maintenance interval and do not predict that any particular car will fail.

All versions

Sheets the catalogue links to all 2 of its engines.

Clogged hybrid battery cooling fan and filterHigh-voltage battery
Period mentioned
2003 onwards
Mileage mentioned
The sheet does not mention a mileage.
Clogged EGR and head gasket on the 1.8 hybrid (2ZR-FXE)Engine
Period mentioned
Approx. 2010–2015
Mileage mentioned
The sheet does not mention a mileage.
Applies if: The Prius Plug-in uses the same 1.8 hybrid engine (2ZR-FXE).
Curtain airbag, rusty discs and battery on the Prius IIIKnown weak points
Period mentioned
2009–2016
Mileage mentioned
What the sheet says: Rusty brake discs (little used because of regenerative braking), shock absorbers worn from about 200,000 km, a high-voltage battery that discharges (isolated cases in 2010 and 2011) and squeaks and easily scratched interior plastics.
Applies if: Weak points of this model from inspections, breakdown statistics and recalls; anything specific to one engine is stated in the sheet.
Applies if: The Plug-in shares body and engine with the Prius III, but the guide does not cover it separately: confirm by VIN.

1.8 Hybrid

Hybrid

Prius inverter coolant pumpElectric powertrain
Period mentioned
2003–2015
Mileage mentioned
The sheet does not mention a mileage.

Prius Plug-in

Plug-in hybrid

We have no faults specific to this engine, only those common to every version.

Which engine has the fewest documented faults?

Documented faults and recalls by engine for the Toyota Prius (III)
Engine	Documented faults	Recalls
1.8 HybridHybrid	41 with conditions	6
Prius Plug-inPlug-in hybridFewest documented	32 with conditions	6

According to the data we have, the engine with the fewest documented faults is the Prius Plug-in (Plug-in hybrid).

By fuel type, the one with the fewest documented faults is: Plug-in hybrid.

We only count the sourced sheets we have. An engine with fewer is not guaranteed to be more reliable: it may have been studied less or sold in smaller numbers.

Official recalls: ask before you pay

A recall existing does not mean this car is affected or that it is still outstanding: it depends on the chassis number, the market and the production date.

Ask the seller for the chassis number (VIN): it has 17 characters, appears in the car's documents and can usually also be seen at the base of the windscreen.
Ask an official Toyota dealer, or the brand's official website if it lets you check by chassis number, whether each recall has been done or is still outstanding for that VIN.
Manufacturer recalls are normally carried out free of charge by the official service network. If one is outstanding, ask for it to be done before you close the sale.

Toyota airbag and seat-belt recalls (2003–2024)Airbags and seat belts