A
- AC
- AM General
- ASÜNA
- ATK North America
- Abarth
- Accurate Cycle Engineering
- Acura
- Adly Moto
- Alfa Romeo
- Allard
- Allstate
- AlphaSports
- Alpine
- Alvis
- Amen Chassis Works
- American Austin
- American Classic Motors
- American LaFrance
- American Lifan Industry
- Amphicar
- Apollo
- Apperson
- Aprilia
- Arctic Cat
- Argo ATV
- Ariel
- Armstong Siddeley
- Arnolt-Bristol
- Arnolt-MG
- Aston Martin
- Auburn
- Audi
- Austin
- Austin Healey
- Autocar
- Autocar LLC.
- Avanti
C
- CAT
- CFMOTO
- CPI USA
- CZ
- Cadillac
- Cagiva
- California Scooter Co.
- Campagna
- Can-Am
- Cannondale
- Case
- Case IH
- Champion Sidecars
- Chandler Limited
- Checker
- Chevrolet
- Chop Shop Customs
- Christini AWD Motorcycles
- Chrysler
- Cisitalia
- Citroën
- Cleveland
- Cleveland CycleWerks
- Club Car
- Cobra Motorcycle
- Coda
- Cole
- Coleman Powersports
- Continental
- Cord
- Country Coach Motorhome
- Covington Cycle City
- Crosley
- Crown Coach
- Cub Cadet
- Cubik Scooters
- Cunningham
- Cushman
M
- MG
- Mack
- Maico
- Marathon
- Marauder
- Marcos
- Marmon
- Marmon Herrington
- Marquette
- Maserati
- Mastretta
- Matra
- Maxwell
- Maybach
- Mazda
- McLaren
- Mercedes-Benz
- Mercruiser
- Mercury
- Messerschmitt
- Metropolitan
- Midwest Motor Vehicles
- Mini
- Mitsubishi
- Mitsubishi Fuso
- Moon
- Moretti
- Morgan
- Morris
- Moskvich
- Moto Guzzi
- Moto-Ski
- Motor Coach Industries
- Motor Trike
- Mustang