Engine and Exhaust System

• Engine Repair
  Check your tires for proper inflation. Under inflation actually wastes fuel. It causes your engine to work harder to push the vehicle. Wheels that are out of line (as evidenced by uneven tread wear or vehicle pulling) make the engine work harder, too. Keep those tires inflated properly, and you will save when you fill up.
• Oil Change
  Do they have all the maintenance records, proof of tune ups, and oil change receipts and other repairs or maintenance done on the car? You just nabbed them with three defensive questions in a row. They probably will not have this information, however,even though everyone SHOULD! This can be a powerful negotiating tool plus if you go to sell a car, it can bring a quick sale. This is especially true for higher line cars like Mercedes, BMW, Lexus, etc. These vehicles can be worth quite a bit less without the proper records.

Tires

• Wheel Alignment
  Tire pressure is another issue that is important to getting the best fuel economy so it is important to keep them inflated at the correct pressure. Even the type of tires can make a difference with radial tires being proven to increase gas mileage. Snow tires can hurt your gas mileage as well as any tires with a deeper tread. Improper front end alignment will not only ruin your tires but because of the resistance poor alignment adds to the tires it also hurts fuel economy.
• Tire Service
  The automobile market is getting increasingly sophisticated and along with this auto enthusiasts want more out of them. This is why we are seeing a surge in the custom wheel market. People want better performance as well as a better look than the original equipment offers in many cases. People do everything from installing custom stereo systems to spoilers and ground effects kits and of course, custom wheels. Adding a set of custom wheels and tires is probably the easiest way to change the look of a vehicle.

Electrical and Electronic

• Electrical Service/Repair
  Automotive electrical systems have never been for the faint of heart, and rewiring a classic car's interior is sometimes a challenge. The good news is that classic cars have fewer electric accessories - power windows, door locks, sun roofs, etc. - and probably no electronic relay boxes. The bad news is that in most cases a complete restoration will require that everything electrical be replaced. The following are six tips for rewiring a classic car for do-it-yourselfers.