Quote Originally Posted by blowfishRus6 View Post
what are some things to improve mpg. this is on a pt cruiser. my mom drives about 450+miles a week and needs to improve her fuel econemy. what about spark plugs?? is there any certin kind that will imporve gas econemy, maybe wires also?? what about a HAI?? anything else you guys could help me with??
Overall basics are the same for most vehicles. Stock plugs, stock wires, etc are fine. Make sure the car is up to date on maintenance like the plugs and wires, fuel filter, air filter, oil, etc. Keep the tires inflated all to 35 psi and check weekly.

But most of all, drive slow. Leave 5 minutes earlier and drive the speed limit. This is the one that most people don't want to do. They want to find a miracle cure or miracle part to put on their car and get better mileage. But the largest factor is driving style. Take off slow from stop signs, drive the speed limit, try to anticipate what is ahead to minimize how much you need to slow down, and coast whenever possible to stop signs, red lights, and down hills.