AutomotiveForums.com
   Over 950 forums covering most makes and models.
   http://www.automotiveforums.com

AutomotiveSports.net
   Covers a broad range of automotive sports such as Domestic, Import, Offroad and Rare/Exotic.
   http://www.automotivesports.net

Autopia
   Detailing enthusiast community. Discussion about car cleaning and polishing.
   http://www.autopia.org/forums/

Beyond Car Forums
   Car discussion groups and forums for enthusiasts from around the world.
   http://forums.beyond.ca/index.php

Car Forums
   Offers Domestic car, Asian import, European import, classic car and SUV boards. Also contains regional forums.
   http://www.car-forums.com/talk/

Car and Driver forums
   Provided by one of the leading automotive magazines. It features discussions with experts, professional journalists, and offers a wide range of automotive related forums.
   http://www.caranddriver.com/idealbb/default.asp

CarForumZ.com
   Broad auto forums offering tech info, reviews, photo galleries and videos.
   http://www.carforumz.net/

CarSponsors.com
   A forum to offer/seek sponsorship for cars.
   http://www.carsponsors.com/forums/

Carnorama
   Free automotive community.
   http://www.carnorama.com

Cruise-Scene.com
   Modified car community.
   http://www.cruise-scene.com/forum/

High Altitude Imports
   Features forums about car performance, security, events, AWD, RWD, and FWD cars.
   http://www.highaltitudeimports.com/vbulletin/index.php

Import Street Scenes
   Forum is specializing on imported cars, like Honda, Nissan, Mitsubishi, and street racing.
   http://www.importstreetscenes.com

JustCars
   Car forums with many features including games, and a place to submit your own car.
   http://www.just-cars.co.uk/forums

RacingKnowledge.org
   Contains forums about domestic and imported cars, racing, and driving techniques.
   http://racingknowledge.org/default.asp

SportsCarForums.com
   The forum for sports car enthusiasts.
   http://www.sportscarforums.com

Supercars.net Community Forums
   Community oriented forum about cars.
   http://speed.supercars.net/Board?viewForums=y&gID=1-2-3-

Talk about Autos
   A comprehensive discussion forum and Usenet archive for serious auto enthusiasts. Includes discussion about parts, mechanics, lemon laws, repairs, restoration, racing, and financing.
   http://www.talkaboutautos.com/

The V8 Owners Forum
   A forum about anything related to V8 engines. Links database, and a classifieds section.
   http://www.v-8.org.uk/forum/

TunerCarz
   Car forum for all makes and models.
   http://www.tunercarz.com/driverforum/

Turbocrime
   Car related discussion.
   http://www.forum.turbocrime.co.uk/index.php

Tyresmoke.net Forums
   A forum for owners, enthusiasts and lovers of performance cars to discuss cars, modifications, performance, and tuners. Specializes on Audi, VW, BMW, Porsche, TVR, and Subaru.
   http://www.tyresmoke.net/ubbthreads/ubbthreads.php?Cat=

Ultimate Japanese Car Club
   Forum for meetings, events, discounts for Japanese cars with over 200 bhp.
   http://www.ultimatejapcars.co.uk

WaveRacer.net Forums
   A community to talk about cars and post pictures.
   http://www.waveracer.net/forums/main.php