Average CO2 emissions per km from new passenger cars by country
Countries reporting
37
Highest
137.7 Grams per kilometre
Slovakia
Lowest
3.8 Grams per kilometre
Norway
Median
113 Grams per kilometre
Years covered
26
2000–2025
Data points
827
What the numbers show
Average CO2 emissions per km from new passenger cars is currently reported for 37 countries. The highest value is 137.7 Grams per kilometre in Slovakia; the lowest is 3.8 Grams per kilometre in Norway.
The median across all reporting countries is 113 Grams per kilometre, and the mean is 100.36 Grams per kilometre.
The gap between the highest and lowest reporting country is a factor of about 36.
Over the past decade 7 countries rose and 29 fell. The largest increase was in Croatia (up 10.5%), and the largest decrease in Denmark (down 62.1%).
Average CO2 emissions per km from new passenger cars: full country ranking
| # | Country | Latest | Year | 10-year change | Trend |
|---|---|---|---|---|---|
| 1 | Slovakia | 137.7 Grams per kilometre | 2024 | up 4.6% | falling |
| 2 | Poland | 133.4 Grams per kilometre | 2024 | up 0.4% | falling |
| 3 | Slovakia | 132.8 Grams per kilometre | 2025 | up 4.1% | falling |
| 4 | Estonia | 131.7 Grams per kilometre | 2024 | down 6.5% | falling |
| 5 | Latvia | 129.4 Grams per kilometre | 2024 | down 7.8% | falling |
| 6 | Slovenia | 128.2 Grams per kilometre | 2024 | up 5.7% | falling |
| 6 | Lithuania | 128.2 Grams per kilometre | 2024 | down 5.6% | falling |
| 8 | Czechia | 127.9 Grams per kilometre | 2025 | up 1.3% | falling |
| 9 | Croatia | 125.6 Grams per kilometre | 2024 | up 8.5% | rising |
| 10 | Bulgaria | 125.1 Grams per kilometre | 2025 | down 4.0% | falling |
| 11 | Croatia | 124.7 Grams per kilometre | 2025 | up 10.5% | rising |
| 12 | Poland | 124.2 Grams per kilometre | 2025 | down 3.9% | falling |
| 13 | Hungary | 121.6 Grams per kilometre | 2025 | down 6.2% | falling |
| 14 | Cyprus | 119.3 Grams per kilometre | 2025 | down 5.1% | falling |
| 15 | Slovenia | 116.3 Grams per kilometre | 2025 | down 2.4% | falling |
| 16 | Romania | 116.2 Grams per kilometre | 2025 | down 7.0% | falling |
| 17 | Estonia | 114.8 Grams per kilometre | 2025 | down 16.3% | falling |
| 18 | Latvia | 113.5 Grams per kilometre | 2025 | down 17.2% | falling |
| 19 | Italy | 113 Grams per kilometre | 2025 | down 1.9% | falling |
| 20 | Lithuania | 112.7 Grams per kilometre | 2025 | down 13.3% | falling |
| 21 | Spain | 105.3 Grams per kilometre | 2025 | down 8.7% | falling |
| 22 | Greece | 104.5 Grams per kilometre | 2025 | down 1.8% | falling |
| 23 | Germany | 102.2 Grams per kilometre | 2025 | down 20.3% | falling |
| 24 | Luxembourg | 97.6 Grams per kilometre | 2025 | down 23.5% | falling |
| 25 | Austria | 95.7 Grams per kilometre | 2025 | down 22.6% | falling |
| 26 | France | 89.1 Grams per kilometre | 2025 | down 19.7% | falling |
| 27 | Ireland | 85.4 Grams per kilometre | 2025 | down 25.2% | falling |
| 28 | Portugal | 79.4 Grams per kilometre | 2025 | down 24.9% | falling |
| 29 | Malta | 76.7 Grams per kilometre | 2025 | down 32.3% | falling |
| 30 | Belgium | 74.7 Grams per kilometre | 2025 | down 36.6% | falling |
| 31 | Netherlands | 65.3 Grams per kilometre | 2024 | down 39.1% | falling |
| 32 | Iceland | 60.8 Grams per kilometre | 2025 | down 57.1% | falling |
| 33 | Sweden | 53.9 Grams per kilometre | 2025 | down 57.3% | falling |
| 34 | Netherlands | 51.4 Grams per kilometre | 2025 | down 49.2% | falling |
| 35 | Finland | 51.1 Grams per kilometre | 2025 | down 58.5% | falling |
| 36 | Denmark | 40.2 Grams per kilometre | 2025 | down 62.1% | falling |
| 37 | Norway | 3.8 Grams per kilometre | 2025 | — | volatile |
Regions and income groups
Aggregates are excluded from the country ranking above so that a region can never outrank a country.
- European Union - 27 countries (from 2020) 98.3 Grams per kilometre