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Audi S6Model year report

2015 Audi S6 Problems

Complaints
5filed with NHTSA
Median mileage
58,250miles, 2 complaints with mileage
Recalls
2campaigns on record
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA crash rating
5 / 5stars overall
EPA fuel economy
20 mpgcombined, 4.0L 8-cyl AWD · 17 city / 27 hwy

Sources: NHTSA records for the 2015 Audi S6 (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error

NHTSA recorded 5 consumer complaints for the 2015 Audi S6. The part named most often is engine, with 3 complaints (60% of the total), followed by electrical system (1) and fuel system (1). 2 of the complaints include a mileage, and 50% of those were filed for vehicles with under 50,000 miles; the median is 58,250 miles. Of all complaints, 1 involved a crash, according to the filers. NHTSA lists 2 recall campaigns and 715 technical service bulletins for this model year. Engine complaints overlap with 40 technical service bulletins filed under the same part. Electrical system complaints overlap with 130 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

Engine: “Driving on the new jersey turnpike and both turbochargers failed. Car lost power and I had to steer to side of the highway without power steering and brakes from far left lane. Audi service says bearings starved of oil and seized. They said this is a common problem with the 4.0 twin turbo Audi engines and that the oil feed line gets blocked and starves the turbochargers of oil, resulting in bearing failure. Repair cost is $9,000. Car has less than 70,000 miles. Audi has a technical service bulletin on file with the NHTSA that specifically addresses this known problem. …”

NHTSA complaint #11404426, filed 2021-03, 69,500 miles

Electrical system: “Steering Module went out for no apparent reason. I was able to find a used one and have it repaired for just under $1000. I had git two quotes for to auto shops that specialize in Audi repairs and they were both over $5300 to repair this steering module. This is unacceptable.”

NHTSA complaint #11675620, filed 2025-07

Other or unknown: “I was driving down the highway and my sunroof exploded. There was a loud bang and I saw and felt air and debris come in through my sunroof visor vents. When I pulled over and got out of the car I saw my sunroof has exploded. I say explode because it is clearly visible that the sunroof is broken from the inside out. There were no trucks around to kick up debris and it was not hit by a rock. Audi still claims no fault even though there were consumer reports articles and recalls done on other models. …”

NHTSA complaint #11406807, filed 2021-04, 47,000 miles

Mileage when problems were reported

50% of the 2 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 47,000 and 69,500 miles.

0%0–100%10–2550%25–5050%50–750%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (2 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 58,250 miles.

Complaints by year filed

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

202142025
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.

Crash test ratings

NHTSA's 5-Star Safety Ratings for the 2015 Audi S6. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.

VersionOverallFrontalSideSide poleRollover
S6 · sedan AWD★★★★★5 / 5555 · 9.0% risk

Driver aids listed by NHTSA for the 2015 model year: forward collision warning optional, lane departure warning not available, automatic emergency braking not available.

Neighbouring years: 2014: same overall rating; 2016: same overall rating. A redesign between years can change both the car and the test.

Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.

Fuel economy and running cost

EPA ratings for each 2015 Audi S6 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
S6 AWD4.0L 8-cyl7-speed automatic172720$4,100

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 2015 Audi S6 → · 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. 715 on record; the latest 10 are shown.

See all 715 bulletins →

Other model years of the Audi S6

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
2017539,9982521—Not enough data
20161947,0002521—Falling
2015558,2502520—Not enough data
20142073,7503520—Falling
20134260,0003—20Not compared (fewer than 3 comparable model years)Falling
2002712,0002—15—Not enough data
199520108,0002—18—Stable

All Audi S6 model years

Frequently asked questions

How many NHTSA complaints does the 2015 Audi S6 have?

NHTSA recorded 5 consumer complaints for the 2015 Audi S6 as of Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2015 Audi S6 is reported most often?

Engine is named most often, in 3 complaints (60% of the total), followed by electrical system with 1.

Has the 2015 Audi S6 been recalled?

NHTSA lists 2 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

How did the 2015 Audi S6 do in NHTSA crash tests?

NHTSA's 5-Star Safety Ratings give the 2015 Audi S6 5 out of 5 stars overall. Ratings from different model years are only comparable when the vehicle was not redesigned in between.

What gas mileage does the 2015 Audi S6 get?

The EPA rates the 2015 Audi S6 (S6, 4.0L 8-cyl) at 20 mpg combined, 17 city and 27 highway, with an estimated annual fuel cost of $4,100 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2015 Audi S6 reported?

Among the 2 complaints that include a mileage, the median is 58,250 miles and the middle half falls between 47,000 and 69,500 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 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program. 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.