Auto Dealers & Portals    
The most popular places to buy or search for cars online.

Autobytel.com - mega-site.. buy directly or get dealer quotes, plus research tools.
Automotive.com - quotes.. get quick email quotes for new cars in your area.
AutoNation.com - mega-site.. tools you need to research and buy your vehicle online.
Autoweb.com - mega-site.. browse and buy, or maintain and sell a vehicle.
CarPrices.com - quotes.. research, build, and compare prices on a new or used cars.
Cars Everything - mega-site.. new/used cars, reviews, news, buying info, and more.
Cars.com - mega-site.. complete local and national inventories, tools, and more.
Carsdirect.com - dealer.. research, price, order, purchase, insure and finance a vehicle.
CarSmart.com - mega-site.. dealer quotes, classifieds, insurance, and more.
MSN Carpoint - dealer.. research and buy a car or maintain your old one.
PowerSportsNetwork - mega-site.. new/used bikes and atv's; reviews and more.
StoneAge.com - mega-site.. dealer quotes, classifieds, and financing.
Yahoo! Autos - portal.. has everything, but great for auto classifieds.

. Auto Resources    
Research valuations or specifications about new and used cars before you buy.

AAA - mega-site.. auto buying services; reviews, financing, and insurance.
AutoGuide.net - directory.. large dedicated automotive directory.
Autosinfo.com - directory.. directory of auto related web sites.
Car and Driver - print mag.. auto reviews and road tests and much more.
Carfax - auto history.. get a vehicle history check before you buy a used car.
CarReview.com - research.. featuring reviews on cars, auto parts, and mobile audio.
DealerNet - research.. comprehensive guide to car buying, with auto inventory search.
edmunds.com - research.. complete buyers guide, member forums, and more.
Fuel Economy - government.. compare gas mileage; links to car research sites.
IntelliChoice - research.. since 1987, publishes the complete car cost guide.
Kelley Blue Book - auto values.. the industry standard of blue books.
Motor Trend - print mag.. covering the auto industry, includes road tests, shows, etc.
MotorCities.com - research.. photo gallery, specifications, and classifieds.
nadaguides.com - appraisals.. unbiased vehicle values; lemon check, quotes, and more.
TopGear.com - ezine.. from BBC; a UK auto buying/selling guide.
Warrantybynet - warranty.. extended auto warranty provider.
Woman Motorist - ezine.. auto articles and reviews targeted for women.

C. Used Auto Classifieds    
Buy or sell a used car online.

AutoTrader.co.uk - UK.. large used car database, and much more.
AutoTrader.com - US.. arguably the largest auto classifieds available.
Collector Car - US.. exotic car classifieds; muscle cars, street rods, classics, etc.
CycleTrader.com - US.. find motorcycles, atv's, and more locally or nationwide.
EzOut-EzIn.com - US.. the easiest way to get out of or sign a new lease.
LeaseTrader.com - US.. get out of your old lease or take over a new one.
massCars.com - US.. online used car classifieds.
Megawheels.com - international.. motor classifieds in canada, US, UK, and australia.
Swapalease.com - US.. did you know you can swap your car lease with another?
ThePartsTrader.com - US.. extensive auto part classifieds.
UsedCars.com - US.. used car, auto part classifieds, and more.

D. Major Auto Manufacturers    
Home pages for domestic and foreign auto makers.

Acura - japanese.. specializing in luxury sedans and sports cars.
Audi - german.. specializing in upscale sedans and compact cars.
BMW - german.. specializing in luxury sports cars and sedans.
Buick - american.. specializing in mid-range sedans.
Cadillac - american.. specializing in upscale sedans.
Chrysler - american.. specializing in mid-range cars and vans.
Dodge - american.. all levels of cars, trucks, and vans.
Ford - american.. specializing in economy cars, trucks, and suv's.
GMC - american.. mid-range trucks, vans, and suv's.
Honda - japanese.. specializing in mid-range sedans and sports cars.
Hyundai - korean.. specializing in affordable compacts and sedans.
Infiniti - japanese.. specializing in upscale sedans.
Isuzu - japanese.. mid-range jeeps and suv's.
Jaguar - british.. luxury sedans and sports cars.
Jeep - american.. mid-range jeeps and suv's.
Kia - korean.. specializing in affordable cars and suv's.
Lexus - japanese.. specializing in luxury sedans and sports cars.
Lincoln - american.. small line of upscale sedans, and suv's.
Mazda - japanese.. specializing in mid-range compacts and sedans.
Mercedes-Benz - german.. specializing in luxury sports cars and sedans.
Mercury - american.. small line of mid-range compacts, sedans, and suv's.
Mitsubishi - japanese.. specializing in mid-range compacts, sedans, and suv's.
Nissan - japanese.. mid-range cars, trucks, vans, and suv's.
Oldsmobile - american.. small line of mid-range sedans and suv's.
Pontiac - american.. specializing in mid-range compacts and sedans.
Porsche - german.. luxury sports cars.
Saab - swedish.. specializing in upscale sports cars, sedans, and wagons.
Saturn - american.. specializing in affordable compact cars and wagons.
Subaru - japanese.. specializing in mid-range cars, wagons, and suv's.
Suzuki - japanese.. specializing in mid-range cars, wagons, and suv's.
Toyota - japanese.. all levels of cars, trucks, suv's, and vans.
Volkswagon - german.. specializing in mid-range compacts.
Volvo - swedish.. specializing in upscale sedans and wagons