1st generation (XW10) · XW10 (US: NHW11) · 539 complaints, 387 with mileage
Owners filed 539 complaints with NHTSA about the 2001–2003 Toyota Prius, and 387 of them record the mileage at which the failure happened. That is enough to show not just what fails, but when.
Failures are spread across the mileage range, with the middle half between 35,974 and 109,000 miles. The median is 68,000 miles.
The most-reported areas are the steering (31.7% of complaints, typically around 87,933 miles), the electrical system (11.5% of complaints, typically around 79,000 miles), the tyres (10.6% of complaints, typically around 23,900 miles).
1 recall campaign cover this generation.
| System | Complaints | Share | Typical mileage | Middle half |
|---|---|---|---|---|
| Steering | 171 | 31.7% | 87,933 | 48,000–123,099 |
| Electrical System | 62 | 11.5% | 79,000 | 37,365–123,200 |
| Tires | 57 | 10.6% | 23,900 | 18,000–40,000 |
| Vehicle Speed Control | 42 | 7.8% | 49,613 | 40,000–86,000 |
| Engine And Engine Cooling | 40 | 7.4% | 56,562 | 33,000–100,000 |
| Service Brakes, Hydraulic | 31 | 5.8% | 41,780 | 200–100,000 |
| Power Train | 20 | 3.7% | 90,000 | 61,716–113,534 |
| Suspension | 19 | 3.5% | 24,665 | 16,000–40,000 |
| Service Brakes | 14 | 2.6% | 85,377 | 35,946–150,000 |
| Fuel System, Gasoline | 13 | 2.4% | — | — |
| Year | Complaints | With mileage |
|---|---|---|
| 2001 | 215 | 134 |
| 2002 | 201 | 153 |
| 2003 | 123 | 100 |
Complaints about this generation are not spread evenly across the vehicle, and the systems that generate the most of them do not all fail at the same point in a car's life. The median failure across all systems here is 68,000 miles; the figures below show which parts of the car run ahead of that and which run behind.
The steering accounts for 31.7% of complaints (171 reports, 139 of them with a mileage figure), with a median of 87,933 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 48,000 and 123,099 miles.
A single system taking 31.7% of all complaints is a concentration worth noting. It means that for this generation, most of what owners reported came back to one area of the car rather than being distributed across many small faults.
The electrical system accounts for 11.5% of complaints (62 reports, 45 of them with a mileage figure), with a median of 79,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 37,365 and 123,200 miles.
The tyres account for 10.6% of complaints (57 reports, 32 of them with a mileage figure), and they fail early — a median of 23,900 miles, well before the vehicle's overall median. Failures clustered this far below the rest of the car usually point to a design or manufacturing problem rather than wear, because wear does not selectively target one system on low-mileage examples. The middle half of these reports falls between 18,000 and 40,000 miles.
Throttle and speed control accounts for 7.8% of complaints (42 reports, 30 of them with a mileage figure), with a median of 49,613 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 40,000 and 86,000 miles.
The engine and its cooling system accounts for 7.4% of complaints (40 reports, 30 of them with a mileage figure), with a median of 56,562 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 33,000 and 100,000 miles.
The hydraulic brake circuit accounts for 5.8% of complaints (31 reports, 22 of them with a mileage figure), and it fails early — a median of 41,780 miles, well before the vehicle's overall median. Failures clustered this far below the rest of the car usually point to a design or manufacturing problem rather than wear, because wear does not selectively target one system on low-mileage examples. The middle half of these reports falls between 200 and 100,000 miles.
Within this generation, complaint volume is not constant across model years. The 2001 model year drew the most — 215 complaints — while 2003 drew the fewest at 123. The median year sits at 201.
NHTSA records 1 recall campaign covering vehicles in this generation. A recall means the manufacturer or the regulator concluded there was a safety defect or a standard was not met, and that a free remedy is owed to owners — including second and later owners.
Recall status is specific to the individual vehicle, not the model. Checking a VIN against NHTSA's lookup is free and takes under a minute, and it is the only way to know whether a particular car has had the work done.
Of the 539 complaints filed against this generation, 44 reported a crash; 8 reported a fire; 31 reported an injury; 5 reported a fatality. Crash-involved reports represent 8.2% of the total.
These are owner-reported outcomes, not verified investigations, and they are not adjusted for how many of these vehicles are on the road. They are included because the distinction between a fault that strands a car and a fault that causes a collision is the one that matters most, and it is not visible in a complaint count alone.
For a buyer, failures on this generation are spread rather than concentrated: the middle half falls between 35,974 and 109,000 miles, with a median of 68,000. There is no single mileage threshold to watch, which means condition and maintenance records are more informative than the odometer.
On inspection, the steering and the electrical system are where this generation's reports concentrate, so those are the areas worth a specific look. The electrical system in particular shows a median failure mileage of 79,000, which gives a concrete number to compare against the odometer of any car you are considering.
None of this is a substitute for a pre-purchase inspection on the individual car. Aggregate patterns describe a population; the example in front of you has its own history.
NiMH traction battery degradation with age, producing reduced electric assist, poor fuel economy and eventually a hybrid system fault; the small early pack is more sensitive than later generations.
Control software fault could cause the engine to stall while driving; addressed by a Toyota recall covering the US-market 2001-2003 cars.
Combination meter failure producing a blank or partially blank display, requiring cluster replacement.
| Campaign | Date | Component |
|---|---|---|
| 11V304000 | 2011-07-08 | Steering:Electric Power Assist System |