WLTP CO₂ emissions in grams per kilometre. Plug-in hybrids dominate the bottom of the table because their certified figure assumes daily home charging — the real-world number is significantly higher if the battery is never plugged in.
WLTP CO₂ in g/km, combined cycle. Includes PHEVs (where headline number can be misleading), efficient diesels and a few exotic outliers like the VW XL1.
Last refreshed: May 2026 · Source: cars-data.com · 103,099 variants indexed