When evaluating fuel efficiency, miles per gallon (MPG) is the standard metric. It measures how far a car travels on a gallon of fuel (approximately 4.5 liters), and the results can vary widely depending on the vehicle.
Fuel Efficiency: Petrol vs. Diesel
Diesel cars generally outperform petrol models in fuel economy, but with the rise in popularity of petrol and hybrid vehicles among UK buyers, the list below includes top options from both categories. It’s important to note that actual fuel economy varies based on driving habits. Official MPG ratings, determined by the worldwide harmonized light-duty vehicles test procedure (WLTP), provide a fair baseline.
Top Fuel-Efficient Cars for Sale
Petrol and Hybrid Options
BMW 330e – 217.3mpg
The BMW 330e is a hybrid that combines a 2.0-litre petrol engine with an electric motor for strong acceleration and remarkable economy. It offers about 30 miles of pure-electric range and can exceed 100 MPG on paper. Its premium interior and advanced technology make it a standout option.
Toyota Prius – 67.0mpg
Available in self-charging and plug-in hybrid versions, the Prius is known for reliability and low running costs. The plug-in model delivers an impressive 235.4mpg if the battery is regularly charged, while the self-charging variant offers nearly 70mpg.
Suzuki Swift – 64.0mpg
This supermini features Suzuki’s mild-hybrid Boosterjet engine. Although it cannot run solely on electric power, its hybrid setup reduces fuel consumption and enhances performance during acceleration.
Toyota Corolla Touring Sports – 63.8mpg
This estate car blends practicality with efficiency. Available with 1.8-litre and 2.0-litre petrol-hybrid engines, it provides smooth handling, excellent equipment levels, and impressive fuel economy.
Hyundai IONIQ – 60.0mpg
Like the Prius, the Hyundai IONIQ is available as a self-charging or plug-in hybrid. The plug-in version offers up to 39 miles of electric-only range and is praised for its cost-effectiveness, spacious boot, and low running costs.
Diesel Options
Mercedes-Benz E300 de – 217.3mpg
This plug-in hybrid diesel delivers exceptional fuel economy, especially when the battery is regularly charged. It offers 33 miles of electric-only range, ideal for city commutes.
Peugeot 208 1.5 BlueHDi – 71.4mpg
This stylish supermini features a 1.5-litre diesel engine capable of exceeding 70mpg. Its interior is equally modern, with a unique dashboard design.
Vauxhall Corsa 1.5 Turbo D – 70.6mpg
Sharing its platform with the Peugeot 208, the Vauxhall Corsa delivers similar economy figures and sharp styling. It’s an efficient and practical choice for everyday driving.
Skoda Octavia 2.0 TDI SE – 68.9mpg
Renowned for its spacious interior and reliability, the Octavia’s 2.0-litre diesel engine ensures excellent economy. It’s especially well-suited for long-distance drivers.
Volkswagen Golf 2.0 TDI – 68.9mpg
This version of the Golf shares its engine with the Skoda Octavia but offers a more premium feel with advanced digital instruments and infotainment options.
Tips for Improving Fuel Efficiency
While choosing an economical car is essential, adopting fuel-saving habits can further reduce consumption:
- Turn Off the A/C: Minimize air-conditioning use to lower the load on your engine.
- Drive Smoothly: Maintain steady speeds and smooth acceleration to reduce strain on the engine.
- Avoid Short Trips: Walk or cycle for short journeys to let your car’s engine warm up properly during drives.
By selecting a fuel-efficient car and practicing mindful driving, you can save money and reduce your environmental impact.