Audi A3 TFSI e feels slow to charge at home: what is normal and what is not

Plug in overnight, wake up to less range than you hoped. It is one of the most common A3 TFSI e complaints, and most of the time the car is doing exactly what it is supposed to do. The honest answer is: home charging on the A3 TFSI e is meant to be modest. The question is whether yours is slower than it should be, or just slower than you expected.

The plain-English version

If you are charging from a normal household wall socket using the OEM "Mode 2" brick that came with the car, you are limited to around 2.3 kW (10 A schuko). That is a deliberate safety cap on the brick, not a fault. A full top-up from empty can easily take 6 to 8 hours at that rate.

If you are charging from a proper wallbox or a Type 2 portable cable, the A3 TFSI e will go up to its on-board charger ceiling of about 3.6 kW single-phase (16 A). That is still not fast in EV terms, but it is roughly 50% quicker than the schuko brick.

That is the real ceiling. The A3 TFSI e cannot use a three-phase 22 kW supply and cannot DC fast charge.

How to get the most out of home charging

1. Stop using the schuko brick as your daily solution. It is a roadside-fallback tool, not a home setup.
2. Use a dedicated Type 2 cable into a wallbox or 16 A commando socket. A single-phase 16 A 3.7 kW Type 2 cable is the correct spec for this car and lets it pull its full single-phase 16 A rather than being throttled by a 10 A brick (the full Audi A3 TFSI e range also stocks matching accessories).
3. Check the in-car charging current setting. MMI lets you choose reduced current (often 6 A or 10 A) for weaker domestic circuits. If it was set low for a holiday, it may still be set low at home.
4. Mind the temperature. Below freezing, the car will pre-condition the battery and a chunk of the early kWh goes to heat, not to the pack. Plug in earlier on cold nights.
5. Watch for software updates. A few owners have reported home-charging behaviour changing after a software push, in both directions. If yours suddenly got slower, ask the dealer whether a re-flash is available.

Bottom line

On a household socket, expect ~2.3 kW. On a proper Type 2 cable into a wallbox, expect ~3.6 kW. If you are seeing well below those numbers, look at the cable, the in-car current limit, and ambient temperature before assuming the car is broken.