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Audi A3 CabrioletModel year report

2018 Audi A3 Cabriolet Problems

Complaints
12filed with NHTSA
Median mileage
34,050miles, 4 complaints with mileage
Recalls
5campaigns on record
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA crash rating
—no overall rating published
EPA fuel economy
28 mpgcombined, 2.0L 4-cyl FWD · 25 city / 33 hwy

Sources: NHTSA records for the 2018 Audi A3 Cabriolet (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 12 consumer complaints for the 2018 Audi A3 Cabriolet. The part named most often is air bags, with 7 complaints (58% of the total), followed by electrical system (1) and exterior lighting (1). 4 of the complaints include a mileage, and 50% of those were filed for vehicles with under 50,000 miles; the median is 34,050 miles. NHTSA lists 5 recall campaigns and 444 technical service bulletins for this model year. Air bags complaints overlap with 1 recall campaign covering the occupant classification and 5 technical service bulletins filed under the same part. Electrical system complaints overlap with 102 technical service bulletins filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Air bags: “The contact owns a 2018 Audi a3. The contact received a recall notice for NHTSA campaign number: 19v474000 (air bags). After contacting the dealer (Audi of tyson, 8598 leesburg pike, vienna, va) and the manufacturer, the contact was informed that the parts needed to repair the vehicle were not available. The contact had not experienced a failure. Vin tool confirms parts not available.”

NHTSA complaint #11253122, filed 2019-09

Electrical system: “The contact owns a 2018 Audi A3. The contact stated while driving in a parking lot, the vehicle stalled. The contact stated that the battery was drained, and the vehicle failed to restart. The contact jumpstarted the vehicle. The battery was replaced. Several unknown warning lights were illuminated. The vehicle was taken to the local dealer, where it was diagnosed that the alternator needed to be replaced. The dealer informed the contact that the part was on backorder. The vehicle was not repaired. The manufacturer was called, but there was no response. …”

NHTSA complaint #11555311, filed 2023-11, 60,000 miles

Fuel system: “The contact owns a 2018 Audi A3. The contact stated after parking the vehicle, a bystander alerted the contact that there was fuel leaking from the rear passenger's side near the fuel tank. The contact drove the vehicle to a gas station and was unable to refuel the vehicle. The check engine warning light was illuminated. The vehicle was towed to the dealer, where the charcoal canister was replaced; however, the failure recurred. The vehicle was towed back to the dealer, where it was determined that the fuel pump needed to be replaced. The vehicle was not repaired. …”

NHTSA complaint #11583078, filed 2024-04, 62,000 miles

Mileage when problems were reported

50% of the 4 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 8,101 and 60,000 miles.

50%0–100%10–250%25–5050%50–750%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (4 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 34,050 miles.

Complaints by year filed

Fewer than 15 complaints, too few for a reliable trend.

2018201942021202220232024
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Fuel economy and running cost

EPA ratings for each 2018 Audi A3 Cabriolet version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
A3 Cabriolet FWD2.0L 4-cyl7-speed automatic253328$2,400
A3 Cabriolet quattro AWD2.0L 4-cyl6-speed automatic223025$2,700

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2018 Audi A3 Cabriolet → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 444 on record; the latest 10 are shown.

See all 444 bulletins →

Other model years of the Audi A3 Cabriolet

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20181234,0505—28—Not enough data
20172540,0003—2819 · FewerFalling
20163628,0003—2850 · TypicalFalling
20158733,0005—2888 · MoreFalling

All Audi A3 Cabriolet model years · Best and worst years by complaints

Frequently asked questions

How many NHTSA complaints does the 2018 Audi A3 Cabriolet have?

NHTSA recorded 12 consumer complaints for the 2018 Audi A3 Cabriolet as of Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2018 Audi A3 Cabriolet is reported most often?

Air bags is named most often, in 7 complaints (58% of the total), followed by electrical system with 1.

Has the 2018 Audi A3 Cabriolet been recalled?

NHTSA lists 5 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2018 Audi A3 Cabriolet get?

The EPA rates the 2018 Audi A3 Cabriolet (A3 Cabriolet, 2.0L 4-cyl) at 28 mpg combined, 25 city and 33 highway, with an estimated annual fuel cost of $2,400 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2018 Audi A3 Cabriolet reported?

Among the 4 complaints that include a mileage, the median is 34,050 miles and the middle half falls between 8,101 and 60,000 miles; 50% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.