When you're shopping for one of the most expensive vehicles on the road, you expect a certain amount of luxury.

So it's no surprise that in J.D. Power and Associates' list of the 10 most expensive 2007 vehicles, even the base models often sport leather seats, top-of-the-line stereos, wood interior trim and automatic everything. J.D. Power and Associates doesn't track some of the superexotics, like Ferrari and Lamborghini, so its "top 10" list is comprised of the popular, but pricey models.

Many of these autos also offer some pretty nifty safety features as standard equipment, from side-impact and head-curtain airbags, to road-hugging abilities that limit skidding and parking sensors that warn if something is too close.

Here are the 10 most expensive models of 2007, along with the average purchase price for each -- what the customer pays walking out the door, rather than the price on the window. Payments aren't the only expense you'll incur with one of these autos. All are outfitted with larger (6- to 12-cylinder) engines and have a 300-horsepower minimum (a few boast 400-, 500- or 600-horsepower versions), so they really guzzle gas.

10 most expensive 2007 vehicles

1. Mercedes-Benz CL-Class 6. BMW 6 Series 2. Porsche 911 7. Jaguar XK 3. Mercedes-Benz SL-Class 8. Audi A8/S8 4. Mercedes-Benz S-Class 9. BMW 7 Series 5. Mercedes-Benz G-Class 10. Land Rover Range Rover

8. Audi A8/S8 Price: $86,826 Style: Four-door sedan Mileage: A8 and A8-L -- 18 mpg combined city/highway A8 L W12 -- 15 mpg combined city/highway S8 -- 15 mpg combined city/highway Engine: 8 cylinder/4.2 liter/350 hp (A8 model) 8 cylinder/4.2 liter/350 hp (A8-L extended wheel-base model) 12 cylinder/6 liter/450 hp (A8 L W12 sport model) 10 cylinder/5.2 liter/450 hp (S8 model) Warranty: 4 year, 50,000 miles, 24-hour roadside assistance Standard equipment: Front dual-stage/dual threshold airbags, side airbags, front and rear head-protection airbags, and driver and front passenger kneebags; antilock brakes with vacuum power assist; electronic braking distribution; traction control; leather upholstery; Bose AM/FM/CD surround sound with six-disc CD changer; multi-media interface (controls all electronics from console); DVD navigation system; pre-wired for Bluetooth; keyless start, and power windows, doors and mirrors. Safety data: Neither the National Highway Traffic Safety Administration (NHTSA) nor the Insurance Institute for Highway Safety (IIHS) conducted crash ratings for these vehicles.

One thing you won't find for these eight cars and two sport utility vehicles is safety data. None of these vehicles are currently rated by either the National Highway Traffic Safety Administration or the Insurance Institute for Highway Safety.

If you've got a taste for luxury and money to burn, a few select automakers might have just the thing for your garage.

Sources: Most-expensive vehicle rankings and average transaction prices provided by J.D. Power and Associates based on 2007 model year vehicles. Individual vehicle information comes from the manufacturers. Mileage estimates supplied by the EPA and U.S. Department of Energy, via FuelEconomy.com. Safety information courtesy of the National Highway Traffic Safety Administration (SaferCar.gov) and the Insurance Institute for Highway Safety (iihs.com).