Note this issue happened right after the car had a service visit at the Audi dealer. It was also an intermittent issue: one moment all was fine, the next it was dead. So in hindsight I think the terminal to the 12V was not tightened. Took it back to Audi, they stated they replaced the battery ($200 at Audi) and charged $300 in labor etc. Onthe A3, in top of the full 150hp from the little 1.4L (which you can use only this in "hold" mode while cruising on the freeway to charge the hybrid battery), you can also use EV only mode, which is very slow and good for less than 20 miles, but it does have 102hp and 243lb/ft of torque by itself Too bad all that power can't be fully 9716posts · Joined 2014. #2 · Jan 23, 2017. Also worth noting if the 12v battery was discharged deeply the battery is now toast and won't hold charge properly so should be replaced. The HV circuits are all dead until the circuit is made, 12v battery is required to activate the contactor to bring the HV to life. EVmode and two Hybrid modes are selectable. These modes can be selected by toggling the EV switch in the center dash panel. The modes will display in the MM HiAudi E-tron Community, I’m Jon, a PhD candidate in Chemical Engineering specializing in electrochemistry at the University of Washington. General / Longand short distances. Regularly charging to 100 percent puts more stress on the battery and can accelerate the aging process. This causes the available battery capacity to decrease at a comparatively faster rate. This is why the brand with the four rings recommends charging up to a maximum of 80 percent if the electric Audi is Ibought a premium one in September for $30k with 25k miles on it. The battery on the car is for short-range and low-speed/urban areas. There are two other modes, hybrid and battery hold, which are more ideal for long drives or freeways. Sport mode when the gas and battery motor kick in at the same time is also very fun! TheAudi A3 Sportback e-tron is one of the most expensive models in the range, but it does at least come with plenty of equipment, including a seven-inch infotainment screen, automatic headlights and wipers, LED headlights and rear parking sensors, counter with potentially very cheap running costs. According to the official figures, the Audi A3 TheQ8 E-Tron Edition Dakar is based on the Q8 E-Tron's 55 grade. That means it features a dual-motor all-wheel-drive powertrain that delivers a maximum 402 TheA3 E-Tron is powered by a 1.4-liter TFSI gasoline engine, coupled with a 75-kilowatt electric motor and an 8.8-kWh lithium ion battery pack. The gas engine is good for 150 hp and 184 lb ft if left in battery Charge Battery Mode (see modes below). The Audi A3 e-tron’s electric motor allows for near silent cruising through towns, and nPnE01l.