The most fuel-efficient petrol, diesel and hybrid cars: Executive sedans 2025
The petrol, diesel and hybrid (non-plug-in) cars registered in the EU in 2025 with the lowest official fuel consumption.
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Clear filter- 1
Mercedes-Benz E 200 D
Hybrid · 161 hp · 129 g/km CO₂
4.7 l
per 100 km · 50 mpg
- 2
Audi A6 Avant
Diesel · 201 hp · 135 g/km CO₂
5.2 l
per 100 km · 45 mpg
- 3
Lexus ES300H
Hybrid · 176 hp · 120 g/km CO₂
5.3 l
per 100 km · 44 mpg
- 4
BMW 520d
Hybrid · 194 hp · 143 g/km CO₂
5.4 l
per 100 km · 44 mpg
- 5
Volvo V90
Hybrid · 194 hp · 149 g/km CO₂
5.7 l
per 100 km · 41 mpg
- 6
Audi A6 Allroad quattro
Hybrid · 201 hp · 156 g/km CO₂
5.9 l
per 100 km · 40 mpg
- 7
Audi S6 Limousine
Hybrid · 339 hp · 185 g/km CO₂
7.1 l
per 100 km · 33 mpg
- 8
Audi S4 Avant
Hybrid · 337 hp · 192 g/km CO₂
7.4 l
per 100 km · 32 mpg
- 9
Maserati Ghibli GT Hybrid
Hybrid · 326 hp · 200 g/km CO₂
9.0 l
per 100 km · 26 mpg
- 10
Maserati Ghibli Modena S Q4
Petrol · 424 hp · 254 g/km CO₂
11.2 l
per 100 km · 21 mpg
- 11
Audi RS 6 GT Avant
Hybrid · 621 hp · 279 g/km CO₂
12.2 l
per 100 km · 19 mpg
- 12
Audi RS 7 Sportback
Hybrid · 621 hp · 277 g/km CO₂
12.2 l
per 100 km · 19 mpg
- 13
Audi RS6 Avant
Hybrid · 621 hp · 280 g/km CO₂
12.3 l
per 100 km · 19 mpg
- 14
Audi RS 6 Avant
Hybrid · 621 hp · 279 g/km CO₂
12.3 l
per 100 km · 19 mpg
How it's calculated
Official type-approval data for the new passenger cars registered in the European Union, published by the European Environment Agency. One spot per model (its best version), and only versions with at least 30 registrations, to rule out errors in the records. Combined WLTP consumption in litres per 100 km (mpg in US gallons). Plug-in hybrids are not included: their official consumption depends on how often they are charged.
Each model's body type (SUV, hatchback, sedan…) and size come from its Wikidata classification and our own review of the best-sellers; models without a type yet only appear under “All”.
Source: European Environment Agency (EEA), “Monitoring of CO2 emissions from passenger cars”, CC BY 4.0 licence. 2025 data (provisional), imported on September 24, 2026. We automatically check for new data every 6 hours (last check: September 25, 2026 at 02:17 PM GMT+2). This is the type-approval data declared by manufacturers and it may contain errors.