How Many Miles Is Too Many for a Used Car?
The short answer: there is no single mileage that makes a used car “too old.” Most well-maintained modern cars comfortably pass 200,000 miles, and many keep going well beyond that. What matters is not the number on the odometer but how those miles were put on and how the car was cared for. A 120,000-mile car with a full service history is usually a safer bet than a 60,000-mile car that was neglected.
The benchmark: about 13,500 miles a year
The most useful thing you can do with an odometer reading is compare it to age. The average driver covers roughly 13,500 miles per year. Divide the car’s total mileage by its age to see where it sits:
- Below average (say, a 6-year-old car with 60,000 miles): lightly used. Good, as long as those miles were not all short cold trips, which are surprisingly hard on an engine.
- About average (a 6-year-old car near 80,000 miles): normal. Judge it on condition and maintenance, not the number.
- Well above average (a 6-year-old car with 140,000 miles): often highway miles from a commuter, which are gentler than city miles. Not a dealbreaker, but ask why.
Very low mileage is not automatically a win, either. A car that sat unused can develop dry-rotted tires, cracked seals, and a tired battery. Cars, like people, do better with regular, gentle exercise than with long idleness.
Why maintenance history beats the odometer
Two identical cars at the same mileage can be worlds apart. The one with oil changes on schedule, timing service done, and receipts to prove it will outlast the one that was run hard and skipped. When you evaluate a specific car, the service records tell you more than the mileage does. No records is itself a data point.
Highway miles are easier on a car than stop-and-go city driving, and fewer previous owners usually means more consistent care. Ask how the miles were accumulated, not just how many there are.
Where mileage genuinely starts to matter
Around 150,000 to 200,000 miles, wear items that were fine for years start coming due at once, suspension bushings, water pumps, the timing system on some engines, and so on. The car is not necessarily unreliable, but your repair budget needs to be bigger, and a pre-purchase inspection becomes essential rather than optional. Past 200,000 miles you are buying on condition and maintenance alone; the model’s reputation for longevity matters a lot here, which is exactly the kind of thing our model reports summarize.
The number depends on the model
“How many miles is too many” has a different answer for a Toyota than for a car with a known weak transmission at 100,000 miles. Some models shrug off high mileage; others have a specific failure that tends to hit in a predictable range. Before you judge a car by its odometer, check what actually tends to break on that model year and when. Our reports pull owner-reported problems keyed to mileage, so you can see whether this car is approaching a known trouble spot. Check any listing free with the extension or browse the reports.
FAQ
Is 150,000 miles too much for a used car? Not by itself. On a model with a good longevity record and solid maintenance history, 150,000 miles can have plenty of life left. Get a pre-purchase inspection and check the model’s known problem mileages first.
What is considered high mileage on a used car? Anything meaningfully above about 13,500 miles per year of age. But “high” is not the same as “bad”, judge it against maintenance and the model’s track record.
Do highway miles matter less than city miles? Generally yes. Highway miles put less wear on the brakes, transmission, and engine than constant stop-and-go city driving, so a high-mileage highway commuter is often in better shape than the number suggests.
Related: how to check a used car before buying · the true cost to own a used car