How we tested the best cars for the Electric Car Grant (ECG)
Each model on this list qualifies for the government’s electric car grant, which was introduced in August 2025.
When reviewing cars, we evaluate them against a range of practical, technical, and user-focused criteria to see how they perform in real-world conditions. Here’s what we look for:
1. Efficiency
Efficiency is important in any car but especially in small ones. When reviewing cars, we compare real-world efficiency measurements with WLTP ones determined by laboratory tests. All the cars on this list are broadly efficient.
2. Interior comfort and space
We measure leg room, head room and storage space. Cabin noise levels at motorway speeds and ride comfort on various road surfaces are also assessed.
3. Performance
We evaluate acceleration, braking and cornering across city, suburban and motorway routes. Overall speed isn’t important to this test but acceleration is, due to real-world scenarios such as getting up to speed for a motorway.
4. Technology
Infotainment systems are tested for ease of use, responsiveness and smartphone integration (Apple CarPlay and Android Auto).
We evaluate ADAS features (adaptive cruise control, lane keeping assistance, automated parking) to check if they have been modified to suit the UK’s roads.
5. Build quality
We inspect fit and finish, panel alignment and interior materials. We look and listen for any rattles, squeaks or cheap-feeling components that might annoy.
6. Practicality
We assess ease of entry/exit, visibility, turning circle and parking aids. We also test features such as powered tailgates, storage compartments and child seat installation points (Isofix).
7. Ownership costs
We review running costs, including charging expenses (home and public), insurance and maintenance schedules.
