Liste des émissions spécifiques moyennes de CO2, par constructeur, dans l'Union en 2007
| Constructeur | Émissions moyennes [g/km]
| AIXAM | 164,000
| ALPINA | 219,932
| AM GENERAL | 357,000
| ASTON MARTIN | 377,860
| AUDI | 184,752
| AUSTIN | 450,000
| AUTOMOBILES DANGEL | 153,000
| AVTOVAZ | 216,632
| BEAUFORD | 208,000
| BENTLEY | 411,664
| BMW | 171,684
| BRABUS | 246,000
| BRONTO | 233,000
| BUGATTI | 577,667
| CATERHAM | 236,088
| CHRYSLER | 226,141
| CITROEN | 142,536
| DACIA | 154,650
| DAIHATSU | 153,070
| DAIMLER | 182,524
| DIAMOND | 260,000
| DONKERVOORT | 194,000
| DR MOTOR COMPANY | 193,048
| FERRARI | 434,860
| FIAT | 141,496
| FORD | 149,343
| FUJI HEAVY INDUSTRIES | 219,488
| GEELY | 183,000
| GENERAL MOTORS | 283,689
| GM DAEWOO | 160,071
| GUMPERT | 342,000
| GWM | 253,480
| HC&E | 220,000
| HONDA | 157,613
| HYUNDAI | 162,046
| ISUZU | 176,133
| IVECO | 224,770
| JAGUAR | 208,219
| KIA | 157,239
| LAMBORGHINI | 424,087
| LAND ROVER | 250,399
| LOTUS | 208,399
| MAGYAR SUZUKI | 156,280
| MASERATI | 354,687
| MAZDA | 172,568
| MG | 186,801
| MICHALAK | 117,000
| MICROCAR | 178,000
| MITSUBISHI | 174,649
| MK SPORTSCARS | 117,000
| MORGAN | 202,324
| NETHERLANDS CAR | 141,061
| NISSAN | 168,408
| OPEL | 153,699
| OSV | 135,915
| PERODUA | 138,135
| PEUGEOT | 142,205
| PGO | 201,767
| PILGRIM | 193,000
| PORSCHE | 287,710
| PROTON | 155,185
| QUADZILLA | 176,000
| QUATTRO | 290,774
| RENAULT | 146,893
| ROLLS ROYCE | 394,526
| ROVER | 188,399
| RUF | 327,000
| SAAB | 190,444
| SALVADOR CAETANO | 224,000
| SANTANA | 165,965
| SEAT | 151,184
| SHUANGHUAN | 270,000
| SKODA | 149,387
| SOVAB | 233,822
| SSANGYONG | 223,430
| SUZUKI | 166,012
| TATA | 168,310
| TIGER | 244,000
| TOYOTA | 150,634
| TVR | 397,500
| UAZ | 314,000
| VM | 185,000
| VOLKSWAGEN | 162,152
| VOLVO | 189,616
| WIESMANN | 310,000