How long to charge a Audi Q8 e-tron at home
Typical trim (Q8 e-tron quattro (21 inch wheels)): 45.5 kWh/100 mi · EPA range 254 mi · on a 48 A (11.5 kW) charger about 25 mi of range per hour*
EPA lists a 240 V full-charge time of 16 h for this trim, which implies an average of roughly 7.2 kW (our estimate, = 116 kWh ÷ 16 h). Chargers well above that are unlikely to charge this car faster on AC; check the owner's manual for the onboard charger rating.
Range added by charger size (typical trim)
| Charger | Range per hour | Per 8-hour night | Empty to full EPA range |
|---|---|---|---|
| 12 A at 120 V (Level 1 cord) (1.4 kW) | 3 mi | 25 mi | 80.3 h |
| 16 A at 240 V (3.8 kW) | 8 mi | 68 mi | 30.1 h |
| 24 A at 240 V (5.8 kW) | 13 mi | 101 mi | 20.1 h |
| 32 A at 240 V (7.7 kW) | 17 mi | 135 mi | 15.0 h |
| 40 A at 240 V (9.6 kW) | 21 mi | 169 mi | 12.0 h |
| 48 A at 240 V (11.5 kW) | 25 mi | 203 mi | 10.0 h |
| 64 A at 240 V (15.4 kW) | 34 mi | 270 mi | 7.5 h |
| 80 A at 240 V (19.2 kW) | 42 mi | 338 mi | 6.0 h |
*Estimates: charger kW ÷ EPA kWh/100 mi × 100, assuming the car accepts that power. Charging tapers near 100% and is slower in the cold.
All 4 trims (EPA data)
| Trim | kWh/100 mi | EPA range | EPA 240 V charge time | Energy for full range (est.) | Source |
|---|---|---|---|---|---|
| 2025 Q8 e-tron quattro (20 inch wheels) | 43.2 | 272 mi | 16 h | 118 kWh | record 48299 |
| 2025 Q8 Sportback e-tron quattro (20 inch wheels) | 43.2 | 272 mi | 16 h | 118 kWh | record 48301 |
| 2025 Q8 e-tron quattro (21 inch wheels) | 45.5 | 254 mi | 16 h | 116 kWh | record 48300 |
| 2025 Q8 Sportback e-tron quattro (21 inch wheels) | 45.5 | 254 mi | 16 h | 116 kWh | record 48302 |
Source: fueleconomy.gov vehicle records (2025 model years). "Energy for full range" = kWh/100 mi × range ÷ 100, measured at the wall, so it includes charging losses and is not the battery size. Usable battery capacity is not in EPA data (data gap).
Will a bigger charger charge it faster? (per trim)
Times are empty to full EPA range. They are capped at the onboard charger rating only where EPA's own trim name states it. Otherwise they assume the car accepts the charger's full power, which may overstate the gain from 48 A and 80 A units.
| Trim | 32 A | 40 A | 48 A | 80 A | EPA 240 V time | What EPA data shows |
|---|---|---|---|---|---|---|
| 2025 Q8 e-tron quattro (20 inch wheels) | 15.3 h | 12.2 h† | 10.2 h† | 6.1 h† | 16 h | EPA time implies 7.3 kW average; EPA data alone can't say whether it accepts more. Check the manual. |
| 2025 Q8 Sportback e-tron quattro (20 inch wheels) | 15.3 h | 12.2 h† | 10.2 h† | 6.1 h† | 16 h | EPA time implies 7.3 kW average; EPA data alone can't say whether it accepts more. Check the manual. |
| 2025 Q8 e-tron quattro (21 inch wheels) | 15.0 h | 12.0 h† | 10.0 h† | 6.0 h† | 16 h | EPA time implies 7.2 kW average; EPA data alone can't say whether it accepts more. Check the manual. |
| 2025 Q8 Sportback e-tron quattro (21 inch wheels) | 15.0 h | 12.0 h† | 10.0 h† | 6.0 h† | 16 h | EPA time implies 7.2 kW average; EPA data alone can't say whether it accepts more. Check the manual. |
† Only if the car accepts that much power. This charger is more than 10% above the average power implied by EPA's own 240 V time, so treat EPA's time as the realistic figure.