2018 Audi A4 problems and recalls

Owners filed 15 complaints on the 2018 Audi A4 in the last three full years, out of 42 on record. The most cited component is the Unknown Or Other.

42
Complaints
1
Recalls
1
Crash reports
0
Fire reports
0
Injuries
45.7
Severity index

Severity index 45.7 Low. The index weights crashes, fires, injuries and fatalities per 100 complaints. How it is calculated.

Middle half of all tracked vehiclesThis vehicle: 45.7p25 46p75 80cleanestworst
Severity index against the quartile range for all tracked vehicles.

Ranked 86 of 122 by severity index among 2018 vehicles with at least 40 complaints, highest first. 30% of those vehicles scored lower. Full 2018 ranking.

Components cited in complaints

Unknown Or OtherUnknown Or Other: 18 complaints (42.9%)18 43%Electrical SystemElectrical System: 16 complaints (38.1%)16 38%StructureStructure: 6 complaints (14.3%)6 14%Fuel/Propulsion SystemFuel/Propulsion System: 6 complaints (14.3%)6 14%Power TrainPower Train: 5 complaints (11.9%)5 12%EngineEngine: 5 complaints (11.9%)5 12%Air BagsAir Bags: 4 complaints (9.5%)4 10%Forward Collision Avoid…Forward Collision Avoidance: 4 complaints (9.5%)4 10%
A single complaint can cite more than one component, so shares total over 100%.
ComponentComplaintsShare of complaints citing it
UNKNOWN OR OTHER1842.9%
ELECTRICAL SYSTEM1638.1%
STRUCTURE614.3%
FUEL/PROPULSION SYSTEM614.3%
POWER TRAIN511.9%
ENGINE511.9%
AIR BAGS49.5%
FORWARD COLLISION AVOIDANCE49.5%

Complaints filed per year

08172019: 12020: 32021: 12022: 52023: 82024: 32025: 42026: 17 (partial year)192021222324252617
Complaints by the calendar year they were filed. The hatched bar is the current year to date.
YearComplaints
20191
20203
20211
20225
20238
20243
20254
2026 (year to date)17
Filings in 2023 to 2025 ran 1.7x those in 2020 to 2022 (15 against 9).

Recall campaigns

CampaignReportedComponentSummary
21V87400010/11/2021SEATSVolkswagen Group of America, Inc. (Audi) is recalling certain 2017-2020 A4 Allroad, A4 Sedan, 2018-2019 RS5 Coupe, 2019 RS5 Sportback, 2018-2020 A5 Cabriolet, A5 Coupe, A5 Sportback, S4 Sedan, S5 Cabriolet, S5 Coupe, and Audi S5 Sportback vehicles. The cable connecting the seat

Other Audi A4 model years

Severity index for every other model year on file. Compare all 8 years side by side.

Source. NHTSA public complaint and recall APIs (api.nhtsa.gov), retrieved 2026-07-25. Complaints are unverified consumer reports. Totals vary with units sold and years on the road. Not affiliated with NHTSA or any manufacturer.