With only a few more days until Christmas, plenty of shoppers are headed out to the mall -- the auto mall, that is. A lot of cars, or at least the keys to them, are going to end up under the tree.

But unlike those glittery television ads that show ecstatic recipients squealing with delight on Christmas morning, car-givers who surprise spouses, paramours or offspring with the wrong make or model could easily end up moaning with buyer's remorse. That's because returning that Jaguar XK coupe in White Onyx for the convertible in Phoenix Red could cost a lot of cold, hard green -- up to $10,000 -- unless the paperwork is handled just the right way.

A little savvy shopping, though, can make a Twilight Amethyst Pearl Lexus SC 430 as easy to exchange as a pair of camel Isotoner gloves. And in most cases, you can get the dealer to throw in that humongous holiday bow on top of the car at no extra charge.

Gift sales liven dealers' slow December
According to auto industry experts, gift sales make up 5 percent to 10 percent of December sales -- both new and used. December has traditionally been a slow month for auto sales, dealers say, except for the week between Christmas and New Year's Day, when many workplaces are closed and buyers look to snap up deals on model-year close-outs. Now, the zero-percent financing and other deals seem to be driving more pre-holiday business.

"Robust consumer incentives for 2004 models are also part of the brighter sales picture. That's going to push more people to buy this year," predicts Paul Taylor of the National Automobile Dealers Association. "That's also going to increase the number of cars that are given as gifts."

With deals such as $4,000 cash rebates on Lincoln Town Cars, financing of zero percent to 4.9 percent on Jaguars, Lexuses, Cadillacs and others, buyers can still get in touch with their inner Scrooge when giving holiday wheels.

Other shoppers, however, don't make financing a consideration.

"There is a lot of car-giving for Christmas, mostly surprises, and the paperwork is usually a cash deal," notes Peter Leavy, floor manager for Mercedes-Benz of Fort Lauderdale, Fla. "We typically have four or five cars waiting upstairs for Christmas. It happens every year."

Whether it's a Cadillac or Kia, if you've decided on giving a car as a gift, the first step is to decide how much a secret Santa you really want to be. Dealers say the only surprise with most Christmas cars is when -- not whether -- they show up. Most times, the decision to buy a new car, as well as the make, model and color, already was made earlier in the year. Then a husband, father or boyfriend -- it's nearly always a man, dealers note -- springs the new car as a Christmas gift.

Uh-oh, it's used
If you don't already know whether your true love wants a Lexus, the best bet probably is to just give a fancy key ring or toy model of the car, rather than the vehicle itself.

It's almost easier to let them know beforehand what you're doing, then actually go get the color you want and not have to turn it back. That way, it's a surprise, but it's not a surprise in the driveway.

If you insist on being able to pull back the drapes Christmas morning to reveal a new set of wheels adorned with a huge bow, let the dealer know what you're planning. Otherwise, the "driveway factor" could end up costing you. In most cases, dealers will agree to hold off on processing the paperwork until a day or two after the holiday. If, however, the car has been registered and titled, it's officially a used vehicle. Instead of simply exchanging the car like a bad necktie, the buyer is now trading it in -- at a loss.

"It's a pre-owned car, so we have to sell it as a used car," Leavy explains. "We'll take the car back at the right money, so we don't lose. They usually lose, we usually win."

Don't spoil the surprise
Cluing the dealer in also ensures that there won't be any telltale mailings or phone calls to your home to spoil the surprise. Lexus, for instance, sends out a "purchase acknowledgment" right after selling a car, while many car dealers follow up with phone calls to make sure customers are happy with their new wheels.

Some dealers also are willing to play a part in arranging a surprise. Dealers describe how they've left the car in somebody's driveway late at night so that when they wake up in the morning, it's there. They try to make it so that nobody knows what's going on.

Rick Germain, owner of Germain Lexus in Columbus, Ohio, also goes the extra mile -- or miles. "I've had somebody ask me to take a car home on Christmas Eve and leave it in my driveway, so that they can come and get it later that evening."

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Dealers also schedule follow-up appointments with recipients, so that they can familiarize the new owner with the details of the car.