Audi e-tron 55 quattro

This is a well-documented issue affecting approximately 2% of e-trons, particularly 2019-2021 models. The rotor shaft seal separating coolant from electrical components can fail, allowing coolant to seep into the motor housing. Once this occurs, the entire motor (front or rear) must be replaced - the seal cannot be replaced independently. UK owners report costs of £7,500-£10,000 per motor, with some facing £15,000 bills. In the USA, Audi extended the motor warranty to 10 years/120,000 miles due to this issue, but UK/European customers only get 3 years standard warranty. Most failures occur between 10,000-30,000 km. Audi has updated the gasket material to be more resilient, but the fundamental design hasn't changed. Wait times for replacement motors can exceed 6 weeks.

Approximately 26,866 vehicles with LG Energy Solution E61V battery modules (produced before March 2022) are affected by Safety Recall 93U9. A potentially critical self-discharge condition can lead to thermal overload, possibly resulting in smoke or fire. Audi opened an investigation in June 2020 after a claim from outside the US alleging a battery fire. Early symptoms include loss of range and performance. Dealers will install diagnostic software to monitor battery module performance and replace affected modules free of charge. Vehicles built from March 2022 onward use Samsung SDI battery cells and are not affected. If you're buying a 2019-2022 e-tron, verify this recall has been completed via VIN check.

This is a known design flaw particularly affecting 2019 models. Water can enter the high-voltage charging port through a faulty seal, potentially leading to short circuits or thermal events. Audi issued a recall in 2019, but many owners report ongoing problems even after the official fix. Water gets behind the plunger and into the lock motor mechanism. In cold weather, frozen water can prevent plugging in the charger. Some owners have had both charging ports fail, with replacement costs just under £2,000 (approximately €2,200). UK owners report this as a "ticking time bomb" - many will eventually encounter this issue. DIY solutions involve creating drain trays with silicone sealant. Check for any signs of moisture, corrosion, or staining around both charging ports during inspection.

Software problems are extremely common on the e-tron. Owners report intermittent MMI freezing, delayed touchscreen responsiveness, Bluetooth connectivity drops, complete MMI crashes requiring restarts, warning lights appearing for no reason, myAudi app connection failures, and navigation system malfunctions. Dealers may require 2-3 days to perform MMI updates - some updates have taken 2 weeks when control units crash during the process. Unlike newer Audis, the e-tron only offers over-the-air updates for maps, not the core software. TSB 93N6 addresses battery system software, while other TSBs cover Bluetooth/GPS fixes. To reset MMI: hold the power button on MMI control pad for 10+ seconds. Full car reboot: park, lock with all fobs kept far away (interference), wait 1+ hour before restarting. Many owners consider the software "embarrassingly bad" for a premium brand.

The e-tron uses an adaptive air suspension system shared with the Audi Q7. Pre-July 2019 build date compressor systems are known problematic and there's a revised system Audi recommends fitting as a complete replacement. Symptoms include air suspension malfunction warnings, extremely soft and bouncy ride feeling unsafe, and leaks in rear suspension lines or airbags (commonly rear driver side). Air compressor replacement costs $1,031-$1,065 (€950-€980), while air spring replacement runs $1,762-$2,081 (€1,625-€1,920). Some dealers refuse warranty coverage claiming it's normal wear. The system is identical to Q7 4M, so independent mechanics familiar with that platform can service it. Check for any suspension warnings in the fault codes and test the ride quality thoroughly - it should feel firm and controlled, not bouncy.

This affects virtually all e-trons equipped with optional virtual mirrors, particularly first-generation cameras without heating elements. Condensation forms within the sealed camera unit on the inside of the glass cover. Early cameras had no heating element, contributing to persistent fogging. Water can enter the housing, sometimes clearing temporarily but returning after car washes. Symptoms include "Visibility reduced" warnings and "assistance systems not available" errors. UK repair costs are approximately £169 investigation plus £1,000 (€1,160) per camera replacement. Many owners report needing 2-3 replacements on the same side. Updated Q8 e-tron cameras have heating elements connected to the rear window heater and sharper sensors. Workaround: hold the heated rear window button for several seconds to keep heating permanently on in cold/damp weather. Audi issued a technical bulletin but no official recall. If buying an e-tron with virtual mirrors, budget for eventual camera replacement.

The e-tron uses an electrohydraulically integrated brake system from the Q7 with electric reinforcement. Two separate recalls affected this system: 2021 models (38 vehicles) had flexray transceiver wafers not properly cleaned by supplier, causing potential corrosion, short-circuits, and interruptions affecting ABS, ESC, and speed indicator. 2019 models (206 vehicles) had brake pedal input rod bolt connection to brake booster actuator rod not performed to specification, risking complete mechanical coupling separation. Owners report loud noises during the brake boosted stage and very soft pedals pushing further to the floor. Some dealers perform hydraulic fluid flush per TSB, but if the problem returns, the entire brake booster module needs replacement (new part number 9J1614105). Labor is significant due to the integrated design. Any soft brake pedal or unusual noises during braking warrant immediate inspection.

The e-tron uses a standard 12V AGM battery (Group 48) for accessories and control systems. When the car is off, the 12V battery is physically isolated from the main high-voltage battery and cannot be charged. While parasitic drain is low (battery may last 5+ years), some owners experience premature failures. Dealer replacement costs $630-$1,000+ (€580-€920) because "the battery needs to be programmed" and "lots of stuff has to be reset." The battery itself costs €300-400, with the rest being labor and software updates. DIY replacement is possible with AGM batteries for €100-170, but you need an OBD Eleven dongle to tell the car what battery type is installed and reset the installation date (the car monitors battery age and adjusts for degradation). This software reset is required for the auto start/stop system to function properly. Average RepairPal estimate is €327-358 including parts and labor at independent shops.

The e-tron 55 has a 95 kWh battery with approximately 84.4-86 kWh usable (2020+ models got slightly more capacity via software update). Owner-reported degradation: 5% loss at 40,000 miles (one owner: 84 kWh new to 80 kWh), "imperceptible" degradation at 42,000 miles/5.5 years for some, 6.5% at 32,000 miles for a 2019 model, and approximately 6-7% at 80,000 miles. High-speed DC fast charging is the single biggest factor increasing degradation - charge at home whenever possible. Audi recommends keeping charge between 20-80% daily, avoiding 100% charges except for long trips, and minimizing frequent fast-charging sessions. The 8-year/160,000 km warranty covers battery capacity falling below 70%. Software updates in 2020 and late 2021 improved efficiency and allowed access to more battery capacity. Request a battery State of Health (SOH) report during any service - not always included automatically.