Negotiate for the best price. Most used car sellers expect to negotiate the price just as most new car dealers do. Get all promises in writing. Be wary if the seller won't put promises in writing. Don't buy unnecessary extras.
Some auto manufacturers recommend against rustproofing new cars and trucks.
Rustproofing a new vehicle may even cancel your warranty. Tinting your car or truck's windows may make it illegal to operate in Iowa. A service contract may be unnecessary if your car or truck has a good warranty. If you do decide to purchase add-ons, compare the dealer's price with prices of independent auto customizing outlets. Get the best deal for you old car.