The truth about mileage: How many miles is too many when buying used?

If you’re shopping for a used car, one of the first questions that comes up is: how many miles is too many? It’s a fair concern, and after all, mileage can reveal a great deal about a vehicle’s wear and tear. As an average customer with no extensive knowledge about used cars, mileage, years, and price are the primary metrics when selecting a used car. But here’s the thing: mileage alone doesn’t tell the whole story. A well-maintained car with 120,000 miles can easily outlast a neglected one with 60,000.

I’ll break down what to expect at various mileage ranges, including the type of maintenance associated with each, along with the average U.S. mileage. As a bonus, I’ve included a list of cars known for their reliability and endurance. Regardless of your budget, finding a great used car is not impossible, but it requires some planning and research.

cars at dealership parking lot — Image credit: Shutterstock.com

What is the average mileage per year in the U.S.?

According to the U.S. Federal Highway Administration, the average American drives around 13,500miles per year. That means:

A 3-year-old car typically has 36,000 to 42,000 miles.
A 5-year-old car averages 60,000 to 70,000 miles.
A 10-year-old car often has 120,000 to 140,000 miles.

These numbers help you spot if a car has been lightly used or heavily driven. High mileage isn’t necessarily a bad thing, especially if the car was primarily used on highways and received regular maintenance.

Mileage categories and what they mean

Before we jump into the details, one thing worth to know is that when it comes to the mileage and durability of cars: as with any product, cars are designed to last for a certain number of miles and years. The body and the engine are typically designed to last for 12-15 years and 150,000 miles, but it does not mean the car will fall apart after that. Any vehicle that reaches this age and mileage has reached the end of its life, and original parts are usually no longer in production.

Under 60,000 miles: low mileage

This is generally considered a sweet spot if you’re looking for a used car that hasn’t seen much road time. At this point, the vehicle is likely still under some form of manufacturer warranty, and you shouldn’t run into many serious issues. Since these cars typically already lost half of their value compared to the original cost of a new car, it can a smart deal to go for this segment.

Typical Maintenance:

Oil and filter changes
Air filter and cabin filter replacements
Tire rotations
Brake pad inspections
Spark plugs (on some models)
Battery checks

Major components should still be in great shape. If anything needs replacing, it’s likely basic wear-and-tear parts.

60,000–100,000 miles: mid mileage

SUVs at car dealership — Image credit: Canva Pro

This is a very common mileage range for used cars and a solid purchase if the service records are in good condition. However, it’s also the stage when you should expect more preventative maintenance.

Typical Maintenance:

Timing belt replacement (if equipped)
Water pump (often replaced at the same time when the timing belt)
Brake pads and rotors
Spark plugs and ignition coils
Transmission and brake fluid flushes
Suspension components like struts or shocks

Think of this phase as “pay now to avoid bigger bills later”. If you decide to buy a car within this mileage range and are unsure about the service records and history, consider replacing all parts that show signs of wear. It is better to fix it before it generates a much more expensive problem.

100,000–150,000 miles: high mileage

At this point, the car has lived a long life, but it could still have plenty left to give. The key is maintenance. If the previous owner took care of it, you might still get several years of reliable use.

Typical Maintenance:

Suspension system repairs (control arms, ball joints)
Full brake system refresh
Cooling system service (radiator, thermostat, hoses)
Fuel system cleaning
Oil leaks may appear (valve cover, oil pan)

As you can see, these are more extensive and costly repairs. This is when reliability hinges on how well the car was maintained in its first 100k miles. At this stage, it is not uncommon to encounter a service bill that costs as much as the price of another car. I recommend these cars if you truly understand what you’re buying and are willing to address a few significant issues.

150,000+ miles: very high mileage

Cars in this range are typically priced low and can be good deals if you’re comfortable with repairs or need a short-term commuter. Reliability varies by brand and model.

Typical Maintenance:

Engine mounts, CV joints, wheel bearings
Transmission or clutch replacements
Electrical and sensor issues
Exhaust system wear
Rust and corrosion (especially in snowbelt states)

If you’re buying in this range, ensure it’s a model known for its durability and has complete maintenance records. Or try to buy as low as possible. These vehicles can have some serious issues. For example, a transmission replacement can easily cost more than a replacement car.

Factors also important

There are several factors that matter significantly when buying a used car, and mileage is only one of them.

Maintenance Records: A well-maintained car with 120,000 miles is better than a neglected one with 60,000.
Number of Owners: Fewer owners usually means more consistent care.
Type of Driving: Highway miles are easier on a car than city driving.
Climate: Dry climates are better; salty winter roads can cause rust.

Before buying any used car, always study the model online, check a few similar vehicles if possible, and never skip the test drive.

Buying car for cash — Image credit: Shutterstock.com

Popular high-mileage cars in the U.S.

I have collected a few cars that have a reputation for going the distance. These models are consistently praised by their owners for lasting 200,000 miles or more, but don’t forget, even the best car can be a poor deal if the previous owners neglected maintenance.