AUDI S6 (2014)
Running costs, reliability data, and common problems from 36 real MOT tests.
Annual Cost
£2,757
£230/month
MOT Pass Rate
89%
Good
Road Tax
£760
Based on CC/year
Insurance
Grp 35-50
3993cc Petrol
Solid Option
89% pass rate, £2757/year to run. 7 points above average.
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Annual Running Costs
~30 mpg
Based on 3993cc
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%.
At 12 years old, 89% of AUDI S6s from 2014 passed their MOT first time in 2026. That's based on 36 tests across the UK. The average mileage at this age is 78,960 miles.
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How Does It Compare?
Mileage Analysis
78,960
Average miles
88,800
Expected for age
The average 2014 AUDI S6 has 78,960 miles on the clock, which is in line with the expected 88,800 miles for a 12-year-old car, suggesting normal everyday use.
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Best Year to Buy?
The most reliable year is the 2013 model with a 96% MOT pass rate, while the 2007 model has the lowest at 84%. The 2014 sits between the two at 89%.
AUDI S6 by Year
Similar Cars to Consider
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About the 2014 AUDI S6
The 2014 AUDI S6 is a premium performance with a 3993cc petrol engine. 36 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. Among all cars from 2014, the average MOT pass rate is 81%, and this model beats that benchmark.
With an average of 78,960 miles at 12 years old, AUDI S6 owners drive about as much as the UK average.
2014 AUDI S6 Fuel Costs
The 3993cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2014 AUDI S6?
Total estimated annual running cost is £2,757 (£230/month), broken down as £1592 fuel, £760 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.
AUDI S6 Reliability Trend
The AUDI S6 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Buying a Used 2014 AUDI S6
At 12 years old, the AUDI S6 is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2013 model has the highest pass rate at 96%. Note: with only 36 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2014 AUDI S6's fuel type, age, and engine size, these are the most likely problem areas to check.
Timing Chain / Belt
Watch outAt 12 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.
Oil Consumption
Medium riskLarger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.
Rust and Corrosion
Watch outAt 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.
Suspension Bushings
Watch outRubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2014 AUDI S6 stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| AUDI S6(2014) | 89% | £1592 | £760 | Grp 35-50 | £2757 |
| MERCEDES C(2016) | 88% | £1592 | £250 | Grp 35-50 | £2247-£510 |
| AUDI A6(2016) | 89% | £1592 | £250 | Grp 35-50 | £2247-£510 |
| PORSCHE MACAN(2015) | 91% | £1592 | £250 | Grp 35-50 | £2097-£660 |
| VOLKSWAGEN TOUAREG(2015) | 85% | £1592 | £250 | Grp 35-50 | £2247-£510 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
Related Audi Models
Explore other Audi cars or similar models in the same category.
AUDI A3
2015 · 1598cc Diesel
AUDI A1
2016 · 1395cc Petrol
AUDI A4
2017 · 1968cc Diesel
MERCEDES C
2016 · 3982cc Petrol
AUDI A6
2016 · 3993cc Petrol
PORSCHE MACAN
2015 · 3604cc Petrol
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