Regular tune-ups are an important part of your Austin Healey maintenance. Schedule these at set time intervals between performances of maintenance. Mileage can vary and is not always the best indicator when a tune-up is needed. A combination of mileage, the type of use and time passage is best. Depending on the age of the car, 3- 5,000 miles is a considerable maintenance period, but if you only cover this in 6 months or more, it may be advisable to to take the car in for a check-up.