During our time with the e-C4 with the 50kWh battery, we saw an efficiency of 3.6 miles per kWh over a range of roads, but with a large proportion of motorway use. This is where the e-C4 is arguably at its worst, because efficiency tends to deteriorate once you’re above 50mph. Citroen quotes a city driving range of 295 miles for the smaller battery around town, and if you keep your speeds below 40mph, you should reap the benefits.
For comparison, when we tried the 54 kWh battery model, we saw an average of 5mi/kWh with minimal motorway use, which translates into a range of 270 miles. This is still 77 miles short of the official City range (347 miles), but shows how driving at higher speeds impacts the e-C4’s range.
Another way to improve the efficiency of the e-C4 is to get the optional heat pump. This energy-efficient device reduces the demand on the battery when heating the interior in cold weather, helping to preserve your overall driving range.
Charging speeds are slower than those of most rivals, with a 100kW maximum allowing a DC charging source to top up the battery from 20-80 per cent in half an hour (both battery packs quote the same figure). If you’re more likely to take advantage of a cheaper electricity tariff and charge up at home, a dedicated 7.4kWh wallbox charger takes seven and a half hours, or more than 24 hours via a three-pin plug. You can specify an 11kW charger for quicker AC charging, but since this requires a three-phase electricity supply and few UK homes have this, we don’t see this as being vitally important.
| Battery size | Range | Insurance group |
| 50kWh | 219 miles | 21 |
| 54kWh | 257 miles | 23 |
Insurance groups
The three versions of the e-C4 rank in insurance groups 21, 22 and 23. In comparison, the C4 petrol sits in groups 16-19, but the Hybrid model matches the top-spec e-C4, in group 23. These group ratings are on a par with similarly priced rivals.
Tax
Electric cars no longer benefit from free road tax, and are subject to vehicle excise duty (VED) at the same rate as combustion-engined models. But because the e-C4 is so affordable, it doesn’t incur the luxury car tax on models that cost more than £50k (raised from £40,000, and comes into effect from 1 April 2026, although it applies retrospectively to cars registered from 1 April 2025).
