CO₂ emissions: 46 of 47 variants rated.
Lexus GS 430 Executive tops the Lexus GS ranking by CO₂ emissions, at 296 g/km.
Across 46 ranked variants, CO₂ emissions spans from 104 g/km to 296 g/km.
| # | Variant | Year | Body | Fuel | CO₂ emissions |
|---|---|---|---|---|---|
| 1 | Lexus GS 430 Executive | 2000 | Sedan | Petrol | 296 g/km |
| 2 | Lexus GS 300 Business | 2003 | Sedan | Petrol | 281 g/km |
| 3 | Lexus GS 300 | 2000 | Sedan | Petrol | 281 g/km |
| 4 | Lexus GS 300 Executive | 2000 | Sedan | Petrol | 281 g/km |
| 5 | Lexus GS 300 Executive | 1999 | Sedan | Petrol | 272 g/km |
| 6 | Lexus GS 300 | 1997 | Sedan | Petrol | 272 g/km |
| 7 | Lexus GS 430 Executive | 2005 | Sedan | Petrol | 269 g/km |
| 8 | Lexus GS 430 President | 2005 | Sedan | Petrol | 269 g/km |
| 9 | Lexus GS F | 2016 | Sedan | Petrol | 260 g/km |
| 10 | Lexus GS 460 Executive | 2007 | Sedan | Petrol | 258 g/km |
| 11 | Lexus GS 460 President | 2007 | Sedan | Petrol | 258 g/km |
| 12 | Lexus GS 300 Business | 2005 | Sedan | Petrol | 232 g/km |
| 13 | Lexus GS 300 Executive | 2005 | Sedan | Petrol | 232 g/km |
| 14 | Lexus GS 300 President | 2005 | Sedan | Petrol | 232 g/km |
| 15 | Lexus GS 300 Business Tech | 2008 | Sedan | Petrol | 224 g/km |
| 16 | Lexus GS 300 | 2007 | Sedan | Petrol | 224 g/km |
| 17 | Lexus GS 300 Executive | 2007 | Sedan | Petrol | 224 g/km |
| 18 | Lexus GS 300 President | 2007 | Sedan | Petrol | 224 g/km |
| 19 | Lexus GS 450h Business | 2006 | Sedan | Petrol | 186 g/km |
| 20 | Lexus GS 450h Executive | 2006 | Sedan | Petrol | 186 g/km |
| 21 | Lexus GS 450h President | 2006 | Sedan | Petrol | 186 g/km |
| 22 | Lexus GS 450h Business | 2008 | Sedan | Petrol | 180 g/km |
| 23 | Lexus GS 450h Business Tech | 2008 | Sedan | Petrol | 180 g/km |
| 24 | Lexus GS 450h Executive | 2007 | Sedan | Petrol | 180 g/km |
| 25 | Lexus GS 450h President | 2007 | Sedan | Petrol | 180 g/km |
| 26 | Lexus GS 450h F Sport Line | 2016 | Sedan | Petrol | 145 g/km |
| 27 | Lexus GS 450h President Line | 2016 | Sedan | Petrol | 145 g/km |
| 28 | Lexus GS 450h 20th Anniversary | 2013 | Sedan | Petrol | 141 g/km |
| 29 | Lexus GS 450h Edition | 2012 | Sedan | Petrol | 141 g/km |
| 30 | Lexus GS 450h F Sport Line | 2012 | Sedan | Petrol | 141 g/km |
| 31 | Lexus GS 450h President Line | 2012 | Sedan | Petrol | 141 g/km |
| 32 | Lexus GS 450h Luxury Line | 2012 | Sedan | Petrol | 139 g/km |
| 33 | Lexus GS 450h Business Line | 2016 | Sedan | Petrol | 137 g/km |
| 34 | Lexus GS 450h Luxury Line | 2016 | Sedan | Petrol | 137 g/km |
| 35 | Lexus GS 450h Business Line Pro | 2013 | Sedan | Petrol | 137 g/km |
| 36 | Lexus GS 450h Business Line | 2012 | Sedan | Petrol | 137 g/km |
| 37 | Lexus GS 300h F Sport Line | 2016 | Sedan | Petrol | 115 g/km |
| 38 | Lexus GS 300h President Line | 2016 | Sedan | Petrol | 115 g/km |
| 39 | Lexus GS 300h Luxury Line | 2014 | Sedan | Petrol | 110 g/km |
| 40 | Lexus GS 300h F Sport Line | 2014 | Sedan | Petrol | 110 g/km |
| 41 | Lexus GS 300h President Line | 2014 | Sedan | Petrol | 110 g/km |
| 42 | Lexus GS 300h 25th Edition | 2015 | Sedan | Petrol | 109 g/km |
| 43 | Lexus GS 300h Business Line | 2014 | Sedan | Petrol | 109 g/km |
| 44 | Lexus GS 300h Business Line Pro | 2014 | Sedan | Petrol | 109 g/km |
| 45 | Lexus GS 300h Business Line | 2016 | Sedan | Petrol | 104 g/km |
| 46 | Lexus GS 300h Luxury Line | 2016 | Sedan | Petrol | 104 g/km |