CO₂ emissions: 79 of 82 variants rated.
Lexus IS F tops the Lexus IS ranking by CO₂ emissions, at 270 g/km.
Across 79 ranked variants, CO₂ emissions spans from 97 g/km to 270 g/km.
| # | Variant | Year | Body | Fuel | CO₂ emissions |
|---|---|---|---|---|---|
| 1 | Lexus IS F | 2009 | Sedan | Petrol | 270 g/km |
| 2 | Lexus IS F | 2008 | Sedan | Petrol | 270 g/km |
| 3 | Lexus IS 300 SportCross Sport | 2001 | Sedan | Petrol | 265 g/km |
| 4 | Lexus IS 300 SportCross Executive | 2001 | Sedan | Petrol | 265 g/km |
| 5 | Lexus IS 300 Sport | 2001 | Sedan | Petrol | 256 g/km |
| 6 | Lexus IS 300 Executive | 2001 | Sedan | Petrol | 256 g/km |
| 7 | Lexus IS 200 SportCross Business | 2002 | Sedan | Petrol | 233 g/km |
| 8 | Lexus IS 200 SportCross | 2002 | Sedan | Petrol | 233 g/km |
| 9 | Lexus IS 200 SportCross Sport | 2002 | Sedan | Petrol | 233 g/km |
| 10 | Lexus IS 200 SportCross Executive | 2002 | Sedan | Petrol | 233 g/km |
| 11 | Lexus IS 200 Business | 2002 | Sedan | Petrol | 233 g/km |
| 12 | Lexus IS 200 | 1999 | Sedan | Petrol | 233 g/km |
| 13 | Lexus IS 200 Sport | 1999 | Sedan | Petrol | 233 g/km |
| 14 | Lexus IS 200 Executive | 1999 | Sedan | Petrol | 233 g/km |
| 15 | Lexus IS 250 Business | 2009 | Sedan | Petrol | 231 g/km |
| 16 | Lexus IS 250 Business Style | 2009 | Sedan | Petrol | 231 g/km |
| 17 | Lexus IS 250 Sport | 2009 | Sedan | Petrol | 231 g/km |
| 18 | Lexus IS 250 Executive | 2009 | Sedan | Petrol | 231 g/km |
| 19 | Lexus IS 250 Business Tech | 2008 | Sedan | Petrol | 231 g/km |
| 20 | Lexus IS 250 Business | 2005 | Sedan | Petrol | 231 g/km |
| 21 | Lexus IS 250 Business Luxury | 2005 | Sedan | Petrol | 231 g/km |
| 22 | Lexus IS 250 Sport | 2005 | Sedan | Petrol | 231 g/km |
| 23 | Lexus IS 250 Executive | 2005 | Sedan | Petrol | 231 g/km |
| 24 | Lexus IS 250C Luxury | 2009 | Convertible | Petrol | 219 g/km |
| 25 | Lexus IS 250C Executive | 2009 | Convertible | Petrol | 219 g/km |
| 26 | Lexus IS 250 Business | 2009 | Sedan | Petrol | 214 g/km |
| 27 | Lexus IS 250 Business Style | 2009 | Sedan | Petrol | 214 g/km |
| 28 | Lexus IS 250 Sport | 2009 | Sedan | Petrol | 214 g/km |
| 29 | Lexus IS 250 Executive | 2009 | Sedan | Petrol | 214 g/km |
| 30 | Lexus IS 250 Business Tech | 2008 | Sedan | Petrol | 214 g/km |
| 31 | Lexus IS 250 Business | 2005 | Sedan | Petrol | 214 g/km |
| 32 | Lexus IS 250 Business Luxury | 2005 | Sedan | Petrol | 214 g/km |
| 33 | Lexus IS 250 Sport | 2005 | Sedan | Petrol | 214 g/km |
| 34 | Lexus IS 250 Executive | 2005 | Sedan | Petrol | 214 g/km |
| 35 | Lexus IS 250 Comfort Line Pro | 2012 | Sedan | Petrol | 194 g/km |
| 36 | Lexus IS 250 Business Line Pro | 2012 | Sedan | Petrol | 194 g/km |
| 37 | Lexus IS 250 High Edition | 2011 | Sedan | Petrol | 194 g/km |
| 38 | Lexus IS 250 | 2010 | Sedan | Petrol | 194 g/km |
| 39 | Lexus IS 250 Comfort Line | 2010 | Sedan | Petrol | 194 g/km |
| 40 | Lexus IS 250 Business Line | 2010 | Sedan | Petrol | 194 g/km |
| 41 | Lexus IS 250 F-Sport Line | 2010 | Sedan | Petrol | 194 g/km |
| 42 | Lexus IS 250 Luxury Line | 2010 | Sedan | Petrol | 194 g/km |
| 43 | Lexus IS 220d Business Tech | 2008 | Sedan | Diesel | 168 g/km |
| 44 | Lexus IS 220d Business | 2005 | Sedan | Diesel | 168 g/km |
| 45 | Lexus IS 220d Business Luxury | 2005 | Sedan | Diesel | 168 g/km |
| 46 | Lexus IS 220d Sport | 2005 | Sedan | Diesel | 168 g/km |
| 47 | Lexus IS 220d Executive | 2005 | Sedan | Diesel | 168 g/km |
| 48 | Lexus IS 220d | 2010 | Sedan | Diesel | 148 g/km |
| 49 | Lexus IS 220d Comfort Line | 2010 | Sedan | Diesel | 148 g/km |
| 50 | Lexus IS 220d Business Line | 2010 | Sedan | Diesel | 148 g/km |
| 51 | Lexus IS 220d F-Sport Line | 2010 | Sedan | Diesel | 148 g/km |
| 52 | Lexus IS 220d Luxury Line | 2010 | Sedan | Diesel | 148 g/km |
| 53 | Lexus IS 220d Business | 2009 | Sedan | Diesel | 148 g/km |
| 54 | Lexus IS 220d Business Style | 2009 | Sedan | Diesel | 148 g/km |
| 55 | Lexus IS 220d Sport | 2009 | Sedan | Diesel | 148 g/km |
| 56 | Lexus IS 220d Executive | 2009 | Sedan | Diesel | 148 g/km |
| 57 | Lexus IS 200d | 2010 | Sedan | Diesel | 134 g/km |
| 58 | Lexus IS 200d Comfort Line | 2010 | Sedan | Diesel | 134 g/km |
| 59 | Lexus IS 200d Business Line | 2010 | Sedan | Diesel | 134 g/km |
| 60 | Lexus IS 200d F-Sport Line | 2010 | Sedan | Diesel | 134 g/km |
| 61 | Lexus IS 200d Luxury Line | 2010 | Sedan | Diesel | 134 g/km |
| 62 | Lexus IS 300h Sport Edition | 2016 | Sedan | Petrol | 109 g/km |
| 63 | Lexus IS 300h F Sport Line | 2013 | Sedan | Petrol | 109 g/km |
| 64 | Lexus IS 300h F Sport Blue Edition | 2020 | Sedan | Petrol | 107 g/km |
| 65 | Lexus IS 300h Sport Edition | 2017 | Sedan | Petrol | 107 g/km |
| 66 | Lexus IS 300h F Sport Line | 2017 | Sedan | Petrol | 107 g/km |
| 67 | Lexus IS 300h Luxury Line | 2017 | Sedan | Petrol | 107 g/km |
| 68 | Lexus IS 300h First Edition | 2013 | Sedan | Petrol | 103 g/km |
| 69 | Lexus IS 300h Business Line | 2013 | Sedan | Petrol | 103 g/km |
| 70 | Lexus IS 300h Business Line Pro | 2013 | Sedan | Petrol | 103 g/km |
| 71 | Lexus IS 300h Luxury Line | 2013 | Sedan | Petrol | 103 g/km |
| 72 | Lexus IS 300h Business Line Pro | 2020 | Sedan | Petrol | 101 g/km |
| 73 | Lexus IS 300h Edition 30 | 2019 | Sedan | Petrol | 101 g/km |
| 74 | Lexus IS 300h Business Line | 2017 | Sedan | Petrol | 101 g/km |
| 75 | Lexus IS 300h 25th Edition | 2015 | Sedan | Petrol | 99 g/km |
| 76 | Lexus IS 300h Edition | 2014 | Sedan | Petrol | 99 g/km |
| 77 | Lexus IS 300h F Sport Edition | 2014 | Sedan | Petrol | 99 g/km |
| 78 | Lexus IS 300h | 2013 | Sedan | Petrol | 99 g/km |
| 79 | Lexus IS 300h | 2017 | Sedan | Petrol | 97 g/km |