2021 Audi A4 - Electric Vehicle Guide
The 2021 Audi A4 belongs to a Audi A4 lineup that Know Your Ride tracks across 19 model years, from 1996 to 2025. It is an all-electric vehicle, so it skips the oil changes, spark plugs and exhaust-system service of a combustion A4 entirely. It is configured as all-wheel drive with an automatic (am-s7). The 2021 sits mid-run, with both earlier (1996) and later (2025) A4 model years also documented.
The high-voltage battery is covered for 8 years or 100,000 miles, separate from the bumper-to-bumper warranty. Routine upkeep centers on tire rotation, DOT 4 brake fluid, G13 battery/cabin coolant, cabin air filters and brake service rather than engine oil. Know Your Ride lists 15 scheduled maintenance items for this vehicle, the earliest interval falling at 10,000 miles. Documented torque values include lug nut 89 ft-lb.
NHTSA complaints for this vehicle cluster around electrical system (2), air bags,vehicle speed control (1), electrical system,lane departure,forward collision avoidance (1). A representative report reads: "The instrument cluster has stop working. Have to monitore vehicle information, Mileage, service, Safty notifications and general vehicle information from the..." There are 4 safety recalls on record; one covers: Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Q7, Q8, Q5 Sportback, SQ5 Sportback, RS6 Avant, RS7, RS Q8, 2020-2021 Audi S6....
Estimated annual charging cost runs near $2,150.
Quick Specs
| Battery warranty | 8 yr / 100,000 mi |
| Est. annual charging | $2,150 |
| Tire size | 225/45R18 |
| Coolant | G13 |
| NHTSA overall | 5 / 5 stars |
| Open recalls on record | 4 |
| Technical service bulletins | 200 |
Common Trouble Codes
- P0300 - Random/Multiple Cylinder Misfire Detected
- P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
- P0171 - System too Lean (Bank 1)
- P0128 - Insufficient Coolant Temperature for Stable Operation
- P0442 - Evaporative Emission Control System Leak Detected (small leak)
- P0455 - Evaporative Emission Control System Leak Detected (gross leak)
- P0700 - Transmission Control System Malfunction
- P0301 - Cylinder 1 Misfire Detected
- U0100 - Lost Communication With ECM/PCM A
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See full specs, parts & repair guides →Part of the free Know Your Ride vehicle maintenance reference. Figures are sourced from EPA, NHTSA and manufacturer data and are for general reference - always confirm with your owner's manual.