What are the most common problems with a 2003 Toyota Prius hybrid?

Known faults on the 2003 Toyota Prius hybrid include stalling software recall, brake light recall and ex-fleet wear. The biggest MOT weak spot is headlights: flagged on 25.3% of tests, 2.2× the rate for all 2003 cars, followed by brake pads (20.3%).

What should I ask the seller before buying a used 2003 Toyota Prius hybrid?

Any recent work on the headlights? (Flagged at MOT 2.2× as often on the 2003 Toyota Prius hybrid as on other cars the same age.) Any recent work on the brake pads? (Flagged at MOT 2.9× as often on the 2003 Toyota Prius hybrid as on other cars the same age.) Can I see the service history and receipts for any big jobs?

Used car guide

2003 Toyota Prius hybrid: common problems and MOT failures

What MOT testers find on the hybrid Toyota Prius first registered in 2003 (hybrid cars only): we looked at the 158 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

Small sample: there were only 158 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.

158MOTs of 2003 hybrid cars, done in 2023–2025

63%pass first time (all 2003 cars: 57%)

7,000typical miles a year

2.2×the usual rate for headlights

What goes wrong more than usual on a 2003 Toyota Prius hybrid?

Parts flagged at MOT more often on the 2003 Toyota Prius hybrid than on all cars registered in 2003.

Headlights2.2× usual

Toyota Prius
25.3% All 2003 cars
11.4%

Failed outright at MOT: 5.7%, against 4.6% of all 2003 cars. The rest were advisories or minor defects.

Rough price £40–£400 our estimate

At the viewing: Check both headlights on dipped and full beam, and look for cloudy or cracked lenses.
Brake pads2.9× usual

Toyota Prius
20.3% All 2003 cars
7%

Failed outright at MOT: 4.4%, against 1.7% of all 2003 cars. The rest were advisories or minor defects.

Rough price £75–£175 (one axle) ClickMechanic

At the viewing: Listen for squealing or grinding when braking, and look through the wheel at how much pad is left.

Common 2003 Toyota Prius hybrid MOT failures and advisories

The share of 2003 Toyota Prius hybrid MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

Lights and electrics

44% of testsRough price £10–£80

At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.
Suspension

41% of testsRough price £120–£400

At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.
Brakes

41% of testsRough price £150–£350

At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.
Tyres

27% of testsRough price £70–£150

At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.
Rust and bodywork

12% of testsRough price £150–£1,000

At the viewing: Check the sills, wheel arches and underneath for rust, and look along the panels for uneven gaps or paint.
Driveshafts and joints

12% of testsRough price £60–£350

At the viewing: On full steering lock, drive slowly and listen for clicking from the front wheels.

Known faults on the 2003 Toyota Prius hybrid

Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.

Stalling software recall
All versions
Mainly in the USA, some cars stalled and wouldn't restart because of faulty engine software. Toyota recalled the affected cars and fixed it.

At the viewing: Run the free DVSA recall check on the reg.

Source: What Car?: Toyota Prius (2003-2009) reliability
Brake light recall
All versions
UK cars were recalled because the rear brake light could malfunction.

At the viewing: Have someone check the brake lights work.

Source: What Car?: Toyota Prius (2003-2009) reliability
Ex-fleet wear
All versions
Many were council or company pool cars and may not have been well maintained.

At the viewing: Check the service history and the V5C for fleet ownership.

Source: What Car?: Toyota Prius (2003-2009) reliability

Questions to ask the seller before buying a 2003 Toyota Prius hybrid

Ask before you travel to see it. A seller who knows the car will have answers, and receipts.

Any recent work on the headlights? (Flagged at MOT 2.2× as often on the 2003 Toyota Prius hybrid as on other cars the same age.)
Any recent work on the brake pads? (Flagged at MOT 2.9× as often on the 2003 Toyota Prius hybrid as on other cars the same age.)
Can I see the service history and receipts for any big jobs?

Looking at a Toyota Prius?

Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.

Other years

Every year of the Toyota Prius compared

Year	MOT tests	Most flagged
2026	–	Too new for MOT data
2025	–	Too new for MOT data
2024	–	Too new for MOT data
2023	1,232	Tyres 16%
2022	2,834	Tyres 16%
2021	6,606	Tyres 15%
2020	26,304	Tyres 18%
2019	47,795	Tyres 16%
2018	42,725	Tyres 16%
2017	45,148	Tyres 17%
2016	43,989	Tyres 18%
2015	40,082	Tyres 17%
2014	35,918	Tyres 20%
2013	26,198	Lights and electrics 22%
2012	23,311	Lights and electrics 24%
2011	21,036	Lights and electrics 31%
2010	28,189	Lights and electrics 33%
2009	20,260	Lights and electrics 35%
2008	19,495	Lights and electrics 39%
2007	19,325	Lights and electrics 40%
2006	10,324	Lights and electrics 43%
2005	6,989	Lights and electrics 44%
2004	2,573	Lights and electrics 47%
2002	129	Suspension 46%
2001	227	Suspension 42%
2000	–	Too few tests

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Toyota Prius cars first registered in 2003. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score