How long to charge a Audi SQ8 e-tron at home
Typical trim (SQ8 e-tron (21/22 inch wheels)): 56.3 kWh/100 mi · EPA range 208 mi · on a 48 A (11.5 kW) charger about 20 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 7.3 kW (our estimate, = 117 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 | 20 mi | 81.3 h |
| 16 A at 240 V (3.8 kW) | 7 mi | 55 mi | 30.5 h |
| 24 A at 240 V (5.8 kW) | 10 mi | 82 mi | 20.3 h |
| 32 A at 240 V (7.7 kW) | 14 mi | 109 mi | 15.2 h |
| 40 A at 240 V (9.6 kW) | 17 mi | 136 mi | 12.2 h |
| 48 A at 240 V (11.5 kW) | 20 mi | 164 mi | 10.2 h |
| 64 A at 240 V (15.4 kW) | 27 mi | 218 mi | 7.6 h |
| 80 A at 240 V (19.2 kW) | 34 mi | 273 mi | 6.1 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 SQ8 e-tron (20 inch wheels) | 48.1 | 242 mi | 16 h | 116 kWh | record 48304 |
| 2025 SQ8 Sportback e-tron (20 inch wheels) | 48.1 | 242 mi | 16 h | 116 kWh | record 48306 |
| 2025 SQ8 e-tron (21/22 inch wheels) | 56.3 | 208 mi | 16 h | 117 kWh | record 48305 |
| 2025 SQ8 Sportback e-tron (21/22 inch wheels) | 56.3 | 208 mi | 16 h | 117 kWh | record 48307 |
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 SQ8 e-tron (20 inch wheels) | 15.2 h | 12.1 h† | 10.1 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 SQ8 Sportback e-tron (20 inch wheels) | 15.2 h | 12.1 h† | 10.1 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 SQ8 e-tron (21/22 inch wheels) | 15.2 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 SQ8 Sportback e-tron (21/22 inch wheels) | 15.2 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. |
† 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.