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Electrical systemPart report

2009 Audi A3 Electrical system Problems

Complaints
5about this part
Share
11%of 47 total for the year
Median mileage
34,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 5 complaints about the electrical system of the 2009 Audi A3, 11% of the 47 complaints for this model year. Where a mileage was given, the median is 34,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Purchased car in 2010 with around 10,000 miles on it. A few months after purchasing, check engine light would illuminate, vehicle would have a noticeable decrease in power and not accelerate over about 40mph. Sometimes after shutting car off and restarting problem would go away, other times it would not. Vehicle taken to Audi dealership car purchased from for repair and initially reported as sensor problem and repaired. Couple weeks after repair car would have same problem, so taken back to dealership and again repaired sensor(s). …”

NHTSA complaint #11322035, filed 2020-04, 10,000 miles

“DSG transmission will abruptly shift down to first gear and would not respond in any other gear. The shift indicator in the dashboard will light up and blink and the check engine light will come on. There are no warnings before this happens and it will happen at random times. It has happen in separate occasions while traveling at different speeds. When this happens while traveling it creates a dramatic reduction on vehicle speed almost causing the vehicle traveling behind me to rear end me. …”

NHTSA complaint #11437903, filed 2021-10

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2025120%
2023457%
2022444%
202016%
2019110%
2018412%
20171227%
20161619%
20151718%
2012614%
201149%
201024%
2009511%
200812%
200712%
200665%

Other parts of the 2009 Audi A3

Air bags
22 complaints
Transmission and drivetrain
15 complaints
Brakes
9 complaints
Engine
5 complaints
Electronic stability control
4 complaints
Exterior lighting
2 complaints
Engine cooling
1 complaints
Other or unknown
1 complaints
Body and structure
1 complaints
Vehicle speed control
1 complaints

← All problems reported for the 2009 Audi A3

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology