This page covers 4 recalls, 32 owner complaints, NHTSA crash-test ratings and EPA fuel economy for the 2018 Audi A3.
29 mpg combined
8.1 L/100km
Subcompact Cars
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted.
5/5 Overall
NHTSA 5-Star Safety Rating
The dominant complaint pattern for the 2018 Audi A3 centers on the airbag system, which accounts by far for the most reports. Owners most commonly describe the passenger seat occupant sensor malfunctioning, the airbag-off warning light illuminates even when an adult passenger is seated, and several owners note the problem returns after a prior repair. The fuel system draws the next-highest complaint volume, with owners reporting a strong fuel smell and visible fuel leaks near the front of the engine. Tires round out the reported issues, with multiple owners describing dry rot and sidewall cracking, in some cases discovered shortly after purchasing the vehicle. A smaller number of reports mention sudden power loss tied to transmission warning codes, with at least one owner experiencing a complete loss of propulsion at highway speed.
32
Total Complaints
1
Crash-Related
2
With Injuries
By System
The 2018 Audi A3 has 4 recalls, the most serious being a fuel leak risk where a loose underhood fuel connector can allow fuel to escape into the engine compartment, creating a fire hazard.
A separate fuel system recall affects front-wheel drive models specifically: a fuel line issue can also result in leaking fuel near potential ignition sources, again raising the risk of fire. On the safety equipment side, the center-rear seat head restraint can detach in a crash, removing protection for that occupant at the moment it is most needed. The passenger seat occupant detection system can also malfunction and incorrectly switch off the front passenger airbag even when someone is seated there, leaving that occupant without airbag protection in a crash.
At a glance
What can fail
A faulty seal on the suction pump inside the fuel tank allows fuel to flow into the emissions control system and potentially leak from the charcoal canister.
What the fix does
The suction pump will be replaced at no cost.
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Driver Assistance
Ratings from NHTSA's New Car Assessment Program (NCAP). Based on 4 tested variants; worst-case ratings shown.
Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The passenger air bag detection system may malfunction and turn off the passenger air bag even when someone is sitting in that seat.
What the fix does
Dealers will replace the detection sensor mat and reprogram the detection control module at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The center-rear seat head restraint may come loose and detach during a crash.
What the fix does
A dealer will inspect the head restraint latching pins and replace the head restraint if the pins are missing.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The fuel connector under the hood may not be fully secured to the fuel supply line, allowing fuel to leak into the engine compartment where it could ignite.
What the fix does
Your dealer will inspect the fuel line connection and tighten it to ensure it is secure.
Summarized — see the official notice for exact wording, dates, and contacts.
