2024 Audi Q4 E-Tron S Line 45 Electric · NC24 ABO

Electric fuel costs for the Q4 e-tron are typically lower than comparable petrol or diesel models, with an average consumption of around 30 kWh per 100 miles, translating to roughly £0.15 per mile based on current electricity rates. Road tax for pure electric vehicles is currently £0, providing a clear saving over internal‑combustion rivals.

The Q4 e-tron S line falls into insurance groups 30‑33, meaning premiums can be moderate to high depending on driver profile and location. Routine maintenance for electric cars is generally cheaper, as there are fewer moving parts, but battery health checks and software updates should be budgeted for. Overall, an estimated annual running cost, including fuel, tax, insurance, and typical maintenance, sits in the region of £900‑£1,200.

Keep in mind that while the vehicle benefits from lower fuel expenses, the cost of replacing a high‑voltage battery after the warranty period can be significant. Regular charging habits and avoiding deep discharge cycles can help preserve battery health and reduce long‑term costs.

During a pre‑purchase inspection, focus on the condition of the high‑voltage battery pack, looking for any signs of swelling, leakage, or corrosion around the battery modules and cooling system. Verify that the battery management system reports healthy state‑of‑charge levels and that there are no error codes on the vehicle's diagnostic screen.

Examine the regenerative braking system and standard brake components for uneven wear, as the Q4 e-tron relies heavily on regeneration, which can mask brake issues. Also, check the condition of the electric motor and inverter for any unusual noises or vibrations, which could indicate early wear.

Finally, assess the exterior and interior for any damage that could affect water ingress, especially around the charging port and door seals. Ensure that all electronic features, including infotainment, driver assistance systems, and climate control, operate correctly, as faults in these areas can be costly to repair on a modern electric vehicle.