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What is a good way to save money on car expenses?
Don't buy the first model year of a new model unless the fuel economy is much better in the latest model.  Buying a car in later years just before the changeover will result in a slightly higher quality vehicle or in some cases dramatically higher quality. Find the best forum for your make/model/year of car.  Join the forum, check the FAQ, sticky threads and post questions when you have trouble.  Do NOT rely passively on the dealer or even private mechanics as they do not drive the car every day.  You are in the best position to identify problems but only if you have some help.   Preventive maintenance is the best if you intend to keep the car for a really long time.  Forums are a really good place to find the typical problems of a particular model and potentially head them off.