H - High mileage
High mileage - Dealers and those in the car trade generally expect cars to cover an average of 12,000 miles per year. Any car that goes above this is reckoned to have high mileage.
It's not so good when you are selling your car, but it can be great news when buying used. Most new cars shrug off high mileages if they are serviced regularly and properly. With lower prices, these cars can be a bargain for the canny buyer. If you cover fewer miles than average, the mileage will also even out during your ownership.