(AOL Autos) -- Big Al, the used car dealer with that small lot down on the corner, may be your mother's cousin, but that doesn't mean you'll get the best used car deal in town from him. He sells all brands of cars, has no visible shop or mechanical staff, and he is the only one that stands behind the quality of his cars ... until the rear tires clear his driveway.

The numbers of items inspected on the cars range from 100 to 300.

A better used car?

If shopping for regular used cars, whether it be at a dealer or private party, just isn't cutting it for you, there may be a better solution -- choosing to buy from a new-car dealer who also operates a Certified Pre-Owned (CPO) used car program. These programs are operated jointly by the manufacturer and the dealer, and practically guarantee the quality, condition, and future long life of the car, truck, crossover, or SUV you're interest in.

It's in the dealer's and the manufacturer's best interest to find the best used cars available for these programs, so most of the cars sold through them are clean, undamaged cars coming off of two- or three-year leases or out of rental-car fleet service.

Restrictions on which vehicles are allowed in the program, such as age and mileage, vary. Some cars in CPO programs could be as young as six months and have only 6000 miles on them, as in BMW's program, and others could be as much as five years old and have a maximum of 80,000 miles on the odometer, in the case of Volvo.

Inspection and warranty

Although the content and extent of each brand's certified pre-owned program varies, one of the constants is the complete vehicle inspection offered by every program. Though the number of items -- or points -- inspected on the vehicle varies from 100 to 300, as a consumer you should feel comfortable knowing that everything important on the car was inspected by the dealer, under the guidelines of the manufacturer, and the worn or bad parts were replaced, if necessary, before the vehicle was put into the program.

Aside from the inspections, the length and coverage of the certified-vehicle warranty also varies from program to program, and the buyer should make absolutely sure that the original manufacturer is offering the warranty, as opposed to a third-party or extended-warranty company. Depending on a vehicle's age, condition and mileage, it may in fact be cheaper to buy an uncertified used car from a dealer and then purchase a separate extended warranty for the vehicle.

The CPO bumper-to-bumper warranties can be a bit complicated, so be sure to do your homework and become familiar with all the ins-and-outs. Some of the warranties start when the car is sold to you, and some warranties start from the date of the original sale or in-service date of the vehicle, but are extended up to six years or 100,000 miles. Certified used car buyers should be sure to read and understand every paragraph of the vehicle and powertrain warranties offered with the vehicle so there are no surprises later.

Some warranties also require the buyer to pay a predetermined deductible amount for each repair; some don't (BMW, for instance, charges a flat fee of $50 for any warranty repair).

Some CPO warranties are even transferable to the next owner after you, which may be an attraction when it comes time to sell it. In most cases, the original long-term powertrain and corrosion penetration warranty will still apply.

You also get perks

Beyond the usual vehicle inspection thoroughness and the length of the certified-vehicle warranty, the various manufacturers and dealers offer a large menu of extras on their certified pre-owned vehicles as enticements to a deal.

What if you buy a CPO vehicle, load your kids into it, and it stops running halfway to grandma's house? Most programs offer 24/7 roadside assistance for such situations on a CPO vehicle (Hyundai, for instance
What does CPO mean? what saves you money? what is a cpo behicle
Certified Pre-Owned new-car dealer who also operates a Certified Pre-Owned (CPO) used car program. Certified Pre-Owned
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