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2018 Audi A4
Solid pick. The public record on this car is clean for its age. Inspect it, then negotiate with confidence.
42 owner complaints · 1 recalls · data verified July 17, 2026 · source: NHTSA
Why buy?
Complaints are still coming in strong late in this car's life, a chronic-problem pattern, not early teething.
Electrical system problems dominate (38% of complaints).
Very few owner complaints for its age and sales volume.
Complaints are overwhelmingly minor: almost none involve crashes, fires, or injuries.
The math, shown
Full methodology →Complaints filed per year
Fading = early teething worked out. Climbing = problems aging in.
How it crashes
NHTSA’s own crash tests, separate from the reliability score above.
5/5 overall
NHTSA 5-Star Safety Rating · 2018 Audi A4 4 DR AWD
Rollover risk in a single-vehicle crash: 10%
No open NHTSA defect investigations on file.
Source: nhtsa.gov/ratings. Star ratings compare vehicles within the same class and size, not across every car on the road.
The road ahead
What breaks on a 2018 Audi A4, plotted where owners report it happening.
Also reported (mileage varies): Electrical system (16) · Body & structure (6) · Fuel system (6) · Transmission & drivetrain (5)
Mileage medians come from owners who mentioned an odometer reading in their NHTSA complaint, a rough guide, not a schedule.
Electrical system
38%16 complaints · 15 in the last 2 years
“The rear-view camera intermittently fails to engage when the vehicle is shifted into reverse. When the camera does display, the image sometimes shows horizontal glitch…”
Body & structure
14%6 complaints · 5 in the last 2 years
“The sunroof has a recurring mechanical/electrical malfunction. During operation, the sunroof binds and makes a loud popping or cracking noise, and the rubber seal beca…”
Fuel system
14%6 complaints · 4 in the last 2 years
“The fuel filler door/gas door intermittently fails to open, preventing normal access to the fuel filler area. This appears to involve the fuel door latch, release mech…”
Transmission & drivetrain
12%5 complaints · 2 in the last 2 years
“While driving there was an internal failure of the front differential which caused debris to fly out and the debris then punctured the transmission according to the di…”
Recalls (1)
Safety recall repairs are free at the brand’s franchised dealers. Before buying, run the VIN at nhtsa.gov/recalls and make the seller show the work was done.
Seats · 21V874000
Volkswagen 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 heater to the Passenger Occupant Detection System (PODS) may have a contact fault, causing the software to misdiagnose a malfunction and disable the passenger air bag.
Risk: A disabled passenger air bag increases the risk of injury in the event of a crash.
Fix: Dealers will replace the connecting cable and either the heating mat or entire seat cover, free of charge. Owner notification letters were mailed January 7, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 74E3. This recall is an expansion of Recall 19V-547 (74D9). Vehicles previously repaired under 19V-547 will need to return for the new remedy.
Before you hand over money
Check the VIN for open recalls
NHTSA’s free lookup shows whether this exact car had its recall remedies completed.
Free NHTSA VIN check ↗Get a pre-purchase inspection
A $150 to $250 independent inspection of this exact 2018 Audi A4 beats every score on the internet, including ours.
What to ask forNot set on the 2018? See how every A4 model year scores →
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What owners say
Real owners of this exact model-year, shown separately from the NHTSA score. If they disagree, that’s worth knowing.