YearToAvoid

2018 Audi A3 Cabriolet Problems, Recalls & Reliability

Verdict

Good

Complaint Index

25/100

#4 most-complained of 5 A3 Cabriolet years

The 2018 Audi A3 Cabriolet has a Complaint Index of 25 and ranks 4th out of 5 model years, earning a 'Good' verdict relative to other A3 Cabriolet years. It has 12 complaints and 5 recalls, with airbags making up 58% of complaints.

Complaints
12
Recalls
5
Crashes / fires
0 / 0
Injuries / deaths
0 / 0
NHTSA overall rating
Not rated
EPA combined MPG
26.5
23.5 city / 31.5 hwy

Top 2018 Audi A3 Cabriolet problems

NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.

  1. Airbags7 (58%)
  2. Electrical System2 (17%)
  3. Suspension, Wheels & Tires2 (17%)
  4. Fuel System1 (8%)

What owners report

  • Owners report reduced headlight visibility at night caused by condensation and fogging inside the housing.
  • A front passenger tire tread separated while driving at 55 mph, with the tire later replaced by the dealer.
  • Multiple owners received the airbag recall notice (Campaign 19V474000) but reported dealers could not obtain the replacement part within a reasonable time.
  • One owner's vehicle stalled in a parking lot due to a drained battery, later diagnosed as an alternator issue, at 60,000 miles.
  • Another owner found fuel leaking near the rear passenger side fuel tank at 62,000 miles, with the check engine light on and the charcoal canister implicated.
2018 Audi A3 Cabriolet complaints: complaints filed per month2Jun 2018Feb 2019Sep 2019Nov 2021Nov 2023
12 complaints filed with NHTSA from Jun 2018 to Apr 2024; peak Sep 2019 (2).

2018 Audi A3 Cabriolet recalls

5 NHTSA recall campaigns list this model year.

  1. NHTSA 19V474000Jun 19, 2019Airbags138,896 vehicles

    Air bags:sensor:occupant classification

    Volkswagen Group of America, Inc. (Audi) is recalling certain 2015-2016 Audi S3 Sedan, 2015-2019 A3 Sedan and A3 Cabriolet, 2016-2018 A3 e-tron, and 2017-2019 RS3 vehicles. An improper electrical contact may cause the Passenger Occupant Detection System (PODS) to falsely detect a malfunction and deactivate the passenger air bag.

    Risk: A deactivated passenger air bag increases the risk of injury during a crash.

    Remedy: Audi will notify owners, and dealers will replace the connector and reroute the cable, free of charge. The recall began September 12, 2019. Owners may contact Volkswagen customer service at 1-800-253-2834. Audi's number for this recall is 69Z4.

  2. NHTSA 19V095000Feb 13, 2019Structure & Body3,326 vehicles

    Seats:mid/rear assembly

    Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2018 Audi A3 sedan and RS3 vehicles. The latching pins for the center rear seat head restraint may be missing.

    Risk: In the event of a crash, the head restraint may detach and cause injury to the vehicle occupants.

    Remedy: Audi has notified owners, and dealers will inspect the head restraints, replacing any that are missing pins, free of charge. The recall began on March 7, 2019. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 72I8.

  3. NHTSA 18V863000Dec 5, 2018Fuel System1,104 vehicles

    Fuel system, gasoline:delivery:hoses, lines/piping, and fittings

    Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2018 Audi TT Roadster, TT Coupe, A3 Sedan and A3 Cabriolet vehicles. The fuel hose quick connector may detach from the fuel supply line in the engine bay, resulting in a fuel leak.

    Risk: A fuel leak in the engine compartment can increase the risk of a fire.

    Remedy: Volkswagen will notify owners, and dealers will secure the fuel line connection, as necessary, free of charge. The recall began January 11, 2019. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 20BK.

See all 5 recalls for the 2018 Audi A3 Cabriolet →

2018 Audi A3 Cabriolet fuel economy and fuel cost

City
23.5 MPG
Highway
31.5 MPG
Combined
26.5 MPG
Annual fuel cost (EPA)
$2,450
15,000 mi/yr
Fuel
Regular
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2018 compared with other A3 Cabriolet years

Complaint Index by model year (0 = fewest issues, 100 = most)025507510020152016201720182019
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2016Avoid7536327
2017Caution5025326.5
2018Good2512526.5
2019No verdict04127

All Audi A3 Cabriolet years: best and worst →

Frequently asked questions

Is the 2018 Audi A3 Cabriolet a good year?
Yes, relative to other A3 Cabriolet years. It has a Complaint Index of 25, the second-lowest among the 5 model years with data, and ranks 4th worst out of 5.
What problems does the 2018 Audi A3 Cabriolet have?
NHTSA lists 12 complaints for the 2018 A3 Cabriolet, with airbags as the top problem area at 58% of complaints, followed by electrical system and suspension issues at 17% each.
Does the 2018 Audi A3 Cabriolet have recalls?
Yes, NHTSA lists 5 recalls covering airbags, structure & body (head restraints), fuel system, and engine control unit software.
How does the 2018 A3 Cabriolet compare to other years?
The 2015 and 2016 model years are rated 'Avoid' with Complaint Index values of 100 and 75, while 2017 is 'Caution' at 50. The 2018 model year scores 25, making it one of the better years.
What is the fuel economy of the 2018 Audi A3 Cabriolet?
EPA rates it at 26.5 mpg combined (23.5 city / 31.5 highway), with an estimated annual fuel cost of $2,450.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.