By Jim Donovan

By Jim Donovan

PHILADELPHIA (CBS) — It’s the time of year when the latest and greatest from auto manufacturers start to hit the road.   If you’re in the market for some brand new wheels, 3 On Your Side Consumer Reporter Jim Donovan has some Do’s and Dont’s to keep in mind when negotiating with a dealer.

Navigating the auto buying process can be tricky, especially if you only do it once every few years.

So Consumer Reports recommends doing research before heading to the dealership:

— Do identify the model, trim level and options that you want.

— Do get a good idea of what a good price is.

— Do round up quotes from a selection of dealers, and pinpoint the one that looks most promising

— Do get pre-approved for an auto loan or if you’ll finance through the dealer have a good idea of competitive interest rates.

At the dealership:

— Don’t buy unnecessary extras. Sometimes they’ll be pre-printed on a sales contract, so read carefully.

— Don’t jump at the extended warranty. Know the vehicle’s reliability record and decide whether it’s necessary.

— Do bring a calculator to do your own math – and make sure the dealer’s numbers match.

— Do be prepared to walk out.  Consumer Reports says that showing a willingness to walk away can be effective in getting the deal — and the wheels  — you really want.

If you’re in the market for a used vehicle, the auto experts at have released their best picks for used cars, seventeen models dating from 2006 through 2011.  To check out the list visit:

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