| M-Hero 917 2023-current (Mengshi 917) | crossovers-suvs, electric-vehicles, Mengshi |
| M-Hero M Hunter 2024 | electric-vehicles, Mengshi, Offroad |
| M.A.T. New Stratos 2010/2018-current | coupes, custom-builds, MAT, sports-cars |
| Mack Semi-Trailer Trucks | Mack, semi-trucks |
| MacMinn LeMans Coupe 1958 | coupes, custom-builds, MacMinn, sports-cars |
| Mad Mike Mazda 787D 2023 | custom-builds, drift, Mazda |
| Mad Mike McLaren MadMac 2024 | custom-builds, Formula-Drift, McLaren, racing-vehicles |
| Madlane Porsche 935 ML 2024 | coupes, custom-builds, Porsche, supercars |
| Magnum Mk5 2017-current | Magnum |
| Mahinda XUV 3XO 2024-current | crossovers-suvs, Mahindra |
| Mahindra BE 6e 2024-current | crossovers-suvs, electric-vehicles, Mahindra |
| Mahindra BE Rall-E Concept | concepts-prototypes, Mahindra, Offroad |
| Mahindra Scorpio-N 2022-current (Z101) | crossovers-suvs, Mahindra |
| Mahindra Thar 2010-2020 | Mahindra |
| Mahindra Thar 2020-current | Mahindra |
| Mahindra XEV 9e 2024-current | crossovers-suvs, electric-vehicles, Mahindra |
| Mahindra XUV700 2021-present | crossovers-suvs, Mahindra |
| MAN Lion’s City Bus 1996-current | MAN, other-vehicles |
| MAN Semi-Trailer Trucks | MAN, semi-trucks |
| MAN TGA (Rally Raid spec) ?-current | Dakar-racing, MAN, racing-vehicles |
| Manhart CR 700 Wagon | custom-builds, Manhart, Mercedes |
| Manhart MH1 350 | BMW, custom-builds, Manhart |
| Manhart MH2 GTR | |
| Manhart MH4 700 LW | BMW, custom-builds, Manhart |
| Manhart TR 800 | custom-builds, Manhart, Porsche |
| Manic GT 1969-1971 | coupes, Renault, sports-cars |
| Manifattura Automobili Torino Kalana | |
| MARC I (Silhouette racing) 2014-2017 | GT-racing, MARC, racing-vehicles, silhouette-racing |
| MARC II V8 2018 | GT-racing, MARC, racing-vehicles |
| Marc Philipp Gemballa Marsien 2022-current | Gemballa, Offroad, Porsche, sports-cars |
| Marcos 1800 GT / 3-litre 1964-1972 | coupes, Marcos, sports-cars |
| Marcos GT Xylon / Luton Gullwing / Fastback GT 1959-1963 | coupes, Marcos, sports-cars |
| Marcos Mantara 1992-1999 | coupes, Marcos, open-top-cars, sports-cars |
| Marcos Mantaray 1997- | Marcos |
| Marcos Mantis GT 1997-2006 | Marcos |
| Marcos Mantis M70 1970-1971 | coupes, Marcos, sports-cars |
| Marcos Mantis XP (Sportscar racing) 1968 | concepts-prototypes, Marcos, racing-vehicles, sportscar-racing |
| Marcos Mantula / Martina 1983-1993 | coupes, Marcos, open-top-cars, sports-cars |
| Marcos Marcacite 2002-2004 (TS250/TS500) | Marcos, open-top-cars, sports-cars |
| Marcos TSO 2004-2007 | coupes, Marcos, sports-cars |
| Marussia B1 2014-2014 | Marussia |
| Marussia B2 2009-2014 | coupes, Marussia, supercars |
| Marussia B3 | Marussia |
| Marussia F2 2010 | concepts-prototypes, crossovers-suvs, Marussia |
| Maruti Suzuki Alto 2022-current (Gen 3) | hatchbacks, Suzuki |
| Maruti Suzuki Super Carry 2016-current | Maruti, pickup-trucks, Suzuki |
| Maruti Suzuki Wagon R 2019-current (Gen 3) | hatchbacks, Suzuki |