Audi A4 VIN check & common problems

Decode any Audi A4 by its VIN and see free safety-recall and owner-complaint data, so you know what to check before you buy.

See a sample report

154

Owner complaints

Recall campaigns

Model years sampled

From NHTSA (US) records over 2016, 2020, 2024

Last updated: June 28, 2026

Safety rating

Overall: 5/5
Frontal crash: 4/5
Side crash: 5/5
Rollover: 5/5

Stability control: Standard
Forward collision warning: Standard

NHTSA NCAP crash tests (US), 2024 model year

Fuel economy

Combined: 9 L/100km
City: 10.2 L/100km
Highway: 7.8 L/100km

EPA estimates (US), 2024 model year

EU CO2 emissions (WLTP)

Official EU type-approval CO2 for the Audi A4, averaged over 51,445 cars registered across the EU.

Diesel
≈ 134 kW
141
g/km
Petrol
≈ 136 kW
155
g/km

EU CO2 data: European Environment Agency (EEA), 2024. Tailpipe (WLTP) figures, reused under CC BY 4.0.

See common A4 problems View safety recalls Is the Audi A4 reliable?

What you can check on a Audi A4

Confirm whether the 3 open recall(s) on record were repaired
Inspect the areas owners report most: Electrical System, Back Over Prevention
Know the 154 owner complaints filed over 2016, 2020, 2024
Check the car matches its 5/5 NCAP crash-test rating
Compare real-world economy against the rated 9 L/100km
Always confirm the individual car by its VIN — model trends aren’t a guarantee

Importing a Audi A4 from the US?

American-market Audi A4s are often cheaper at US auctions — but salvage titles, flood damage and odometer rollback are common on cars sold there. Decode the VIN and read the history before you buy or ship, then check the import steps and taxes for your country.

Import steps & taxes by country

Audi A4: frequently asked questions

Does the Audi A4 have any recalls?

3 NHTSA recall campaigns are on record for the Audi A4 (2016, 2020, 2024). Always check a specific car by its VIN for currently open recalls.

What are the most common Audi A4 problems?

Owners filed 154 complaints with NHTSA over 2016, 2020, 2024. The most-reported areas are Electrical System, Back Over Prevention.

Is the Audi A4 safe?

The Audi A4 earned 5 out of 5 stars overall in NHTSA (US) crash tests.

How economical is the Audi A4?

EPA-estimated combined economy is about 9 L/100km, based on US testing.

What are the CO2 emissions of the Audi A4?

Based on EU registration data (2024), the Audi A4 emits around 141 g/km of CO2 (WLTP, tailpipe) in its most common version. Lower CO2 usually means lower road tax across much of the EU.

Complaint and recall data: NHTSA (US). Same-generation EU models usually share these mechanical issues.