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full bulletin at NHTSA ↗2014 Audi S8 engine problems
severe 4 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Complaints
4
Recalls
0
Avg fix
$3,100
1fire
When does it fail?
Of the 4 engine complaints filed for the 2014 Audi S8, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 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
No new NHTSA engine complaint has been filed on this vehicle in over 7 years — the issue may be aging out of the active population.
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 information regarding UV leak additive for finding oil leaks.
full bulletin at NHTSA ↗This bulletin provides informatin when the engine does not run smoothly at idling speeds.
full bulletin at NHTSA ↗This bulletin provides information when the MIL is on; DTCs for misfire, air/fuel ratio imbalance, or lean fuel system stored in the ECM P030000.
full bulletin at NHTSA ↗This bulletin provides informatin when the engine does not run smoothly at idling speeds.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 4 most recent
Turbochargers can failure with no warning while driving which is a severe safety hazard
I already filed complaint 11218674. This is adding detail. Audi has issued tsb 2044640/5 (https://static.NHTSA.gov/odi/tsbs/2018/mc-10153123-9999.pdf) to address the damage when this very known issue occurs. The problem identified in the tsb is that original parts require replacement (oil screen and check value). Significantly, the original oil screen has been re-designed to prevent the…
The contact owns a 2014 AUDI S8. The contact stated while driving 60MPH the vehicle began to vibrate violently from the engine compartment; the cabin filled up with smoke and the vehicle tailpipe began producing smoke. The contact was unable to pull over and manually moved the vehicle into the shoulder. The contact stated no warning lights were illuminated The vehicle was towed to the contact's…
The contact owns a 2014 Audi S8. The contact stated while driving 65 MPH, the low oil warning light illuminated on the instrument panel. Upon visual inspection of the engine compartment, the contact observed that the engine oil level was abnormally low, prompting him to add oil to the engine. However, afterwards the contact stated that the low oil warning light illuminated again, after which…
Had engine trouble with your 2014 Audi S8?
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 2014 Audi S8?
It's a meaningful issue. 4 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 4 complaints filed, engine issues most often appear around 54,750 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/2014/Audi/S8.
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.