This bulletin provides information when there is increased oil consumption; >0.5ltr/1000 km.
full bulletin at NHTSA ↗2016 Audi A6 engine problems
severe Owners of the 2016 Audi A6 have filed 11 NHTSA complaints about the engine at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Complaints
11
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2012 A6 | 10 |
| 2013 A6 | 7 |
| 2014 A6 | 5 |
| 2015 A6 | 6 |
| 2016 A6 (this page) | 11 |
| 2017 A6 | 3 |
| 2019 A6 | 6 |
1fire
When does it fail?
Of the 11 engine complaints filed for the 2016 Audi A6, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 10 model years of Audi A6 we track for engine problems, this one carries the most owner complaints on file — 11.
Engine accounts for 22% of all owner complaints filed against this vehicle, across 6 categories tracked.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin provides informaiton when the engine is not running smoothly, misfiring.
full bulletin at NHTSA ↗This bulletin provides information on VIN Plates, Safety Certification labels, and the ordering procedures.
full bulletin at NHTSA ↗This bulletin provides information on the use of the Audi frequencly analysis app, and where the application can be downloaded.
full bulletin at NHTSA ↗This bulletin provides information regarding UV leak additive for finding oil leaks.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The most consistent complaint across these 11 reports is premature water pump failure. Owners describe water pump seal and housing breakdown at 26,000 to 83,000 miles—far below the typical 150,000-mile service life. Several failures occurred before 30,000 miles. In complaint #3, steam appeared under the hood with no warning lights; the pump, seal, and thermostat all failed at 51,803 miles. Complaint #2 documents two separate failures: the first at 36,965 miles (covered by extended warranty) and the second at 83,000 miles (quoted at $2,350). Owners report being excluded from existing Audi settlements despite multiple failures.
Thermostat malfunction appears tied to water pump failure in several cases, with check engine lights illuminating at 48,000 to 51,000 miles.
A separate group of complaints describes low-speed drive behavior: one owner reports the engine lurching forward or backward during parking and garage maneuvers—described as resembling a misfire with sudden jump. The dealership could not reproduce it, though service personnel confirmed experiencing the same issue on their own 2016 A6.
One complaint documents sudden engine shutdown mid-turn on an expressway, with steering lock and stop-start deactivation warning. Another reports an engine fire after 24-hour idle. Complaint #5 references an unresolved NHTSA 19V035 fuel rail recall from February 2019 with parts shortages.
Failure modes owners describe
Water pump premature failure
Water pump seal and housing fail well before normal service life, causing coolant loss. Owners report failures at 26k, 36k, 48k, 51k, and 83k miles. A mechanic noted failure at 51k miles is unusual; normal expectation is 150k+ miles.
When: 26,000–83,000 miles; earliest failures under 30k miles
Symptoms owners cite: Coolant level drops below minimum; Steam visible under hood; No warning lights in some cases (complaint #3); Check engine light illuminated (complaints #6, #10)
Repairs/costs cited: Water pump replacement $2,350 quoted by Audi (complaint #2); thermostat also failed in complaint #3; upper coolant pipe replaced in complaint #8; thermostat assembly replaced in complaint #8
Recalls/TSBs owners mention: One owner notes Audi water pump settlement exists but their 2016 A6 with two failures was excluded (complaint #2). Complaint #7 suggests recall should include 2016 model year but currently ends at 2015.
Thermostat failure
Thermostat malfunction occurs concurrently with water pump failure or independently, confirmed at low mileage. Complaint #3 notes thermostat failed along with water pump at 51k miles.
When: 48,000–51,000 miles
Symptoms owners cite: Check engine light illuminated; Engine overheating risk
Repairs/costs cited: Replaced during water pump service; thermostat assembly replaced in complaint #8
Unexpected engine lurch at low speed
Engine lurches forward or backward unexpectedly during low-speed maneuvers (parking, garage entry/exit) when driver's foot is on brake. Owner describes it as resembling an engine misfire followed by a 'jump.' Dealership unable to reproduce; however, dealership service personnel with same model confirmed experiencing identical issue.
When: Occurs intermittently during low-speed maneuvers; no specific mileage reported
Symptoms owners cite: Vehicle lurches forward or backward unpredictably; Occurs in park, reverse, or forward at low speed; Happens when brake applied and easing into spaces; Resembles misfire followed by vehicle jump
Repairs/costs cited: Not repaired; dealership unable to reproduce despite multiple reports
Sudden engine shutdown (Stop/Start malfunction)
Engine shuts off unexpectedly while driving, triggering 'Stop/Start deactivated manually restart your car' message. Steering wheel locks, interior electronics remain operational. Requires 2-minute delay before restart.
When: No specific mileage; complaint describes ongoing Stop/Start hesitation prior to complete shutdown
Symptoms owners cite: Engine cuts off unexpectedly during normal driving; Steering wheel locks immediately; Stop/Start deactivation message appears; Vehicle becomes immobile with locked steering; Interior lights and radio continue to function
Fuel rail leak (Recall NHTSA 19V035)
Fuel rail defect causing fuel leak with fire risk. Owner received recall notice February 2019 but parts remained unavailable 7 months later. Dealership reported not receiving parts from Audi for months despite critical safety nature.
When: Recall notice received February 2019; no repair completed as of complaint filing
Symptoms owners cite: Potential fuel leakage; Fire hazard
Repairs/costs cited: Parts unavailable from Audi; repair not performed
Recalls/TSBs owners mention: Recall NHTSA 19V035 issued February 2019 for fuel rail defect; however, parts backlog prevented repair execution
Engine fire
Engine caught fire without vehicle being operated for 24 hours prior. Minimal detail provided in complaint.
When: After 24-hour idle period
Symptoms owners cite: Engine fire
Synthesized from 11 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 5 most recent
In february 2019 I received a recall letter, NHTSA 19v035, from Audi telling me my car may have a defect in the fuel rails which could leak fuel causing a fire! I immediately contacted my dealer Audi of wallingford ct and put my name on a waiting list for repair. I have now been waiting seven months and despite several calls to the service dept, it has not been fixed. They tell me they are not…
The water pump on my 2016 Audi A6 has failed multiple times prematurely. The first water pump failed at 36,965 miles in May 2019. That repair was covered under an extended warranty I purchased. The second water pump failed around 83,000 miles in September 2025, and Audi is now quoting me $2,350 out of pocket to replace it. I am now facing a third water pump replacement, which is far earlier than…
When operating at low speeds the vehicle will sometimes unexpected lurch forward or backwards depending on if the transmission is in forward or reverse. I have automatic transmission. This often happens in maneuvers such as parking or backing into or out of a garage parking place. It happens when the transmission is in forward or reverse and typically when the driver's foot is on the brake…
The engine caught fire without being used for 24 hours before
During annual oil change inspection the mechanic found that the coolant was leaking and that the water pump needed to be replaced. The car has under 48000 miles.
Had engine trouble with your 2016 Audi A6?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2016 Audi A6?
It's a meaningful issue. 11 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Based on the 11 complaints filed, engine issues most often appear around 26,698 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2016/Audi/A6.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.