Analysis undertaken by consulting and data firm JATO shows that small car specialist Fiat has once again achieved the lowest volume-weighted average CO2 figure of Europe’s top selling brands at 133.7g/km, down from 137.3g/km in 2007. BMW showed the most improvement.
 
Peugeot sits in second place, the only other volume manufacturer to achieve a sub-140g/km figure, with an average of 138.1g/km. Citroen, its PSA sister company, is in third place at 142.4g/km, the only manufacturer to have seen a marginal increase since 2007, thanks largely to the introduction of new larger models into the market. The top five places are completed by Renault (142.7g/km) and Toyota (144.9g/km).
 
“Looking at emissions in the context of Europe’s best selling brands, the top ten places are held by the same manufacturers as 2007”, says David Di Girolamo, Head of JATO Consult.
 
”BMW’s performance has been exceptional (an overall reduction of 16g/km) in achieving the highest overall reduction year on year given their product range, but viewed holistically, the entire industry has made significant progress. The average total reduction across the market is 5.3g/km, which in a short twelve month window is something the industry can be very proud of.”
 
The average for the whole market is 153.7g/km.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more


Top 10 best-selling brands ranked by volumes-weighted average CO2 emissions:




































Make


Ave CO2 (g/km) 2008


FIAT


133.7


PEUGEOT


138.1


CITROEN


142.4


RENAULT


142.7


TOYOTA


144.9


FORD


147.8


OPEL/VAUXHALL


151.1


VOLKSWAGEN


158.8


BMW


160.6


MERCEDES


185.0

Just Auto Excellence Awards - Nominations Closed

Nominations are now closed for the Just Auto Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact.

Excellence in Action
Continental has secured the Window Displays Innovation Award in the 2025 Just Auto Excellence Awards for its Window Projection solution, transforming side windows into dynamic, data-rich canvases. Discover how this compact projection technology and intelligent software are reshaping in-car UX and opening fresh revenue streams for OEMs and mobility providers.

Discover the Impact