Is the 2009 AUDI S4 reliable?

Excellent reliability. Very few MOT failures. 91% of AUDI S4s from 2009 passed their MOT first time in 2026, based on 216 tests. That's 9 points above the national average of 82%.

How much does a 2009 AUDI S4 cost to run?

Estimated annual running cost is £2,277 (£190/month), including £1592 fuel, £430 road tax, £55 MOT, and £200 predicted repairs.

What is the MOT pass rate for a 2009 AUDI S4?

The 2009 AUDI S4 has a 91% MOT pass rate based on 216 tests in 2026. This ranks 54 out of 575 cars from 2009.

Which year AUDI S4 is most reliable?

The 2013 AUDI S4 has the highest MOT pass rate at 94%. The least reliable year is 2006 at 78%.

AUDI S4 (2009)

Q: What is the average mileage for a 2009 AUDI S4?

The average mileage for a 2009 AUDI S4 is 92,422 miles, which is below the expected 125,800 miles for a 17-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Running costs, reliability data, and common problems from 216 real MOT tests.

Annual Cost

£2,277

£190/month

MOT Pass Rate

91%

Excellent

Road Tax

£430

Based on CC/year

Insurance

Grp 30-42

2995cc Petrol

Great Choice

91% pass rate, £2277/year to run. 9 points above average.

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Petrol2995cc17 years old216 tests92k miles avg

Annual Running Costs

Fuel (Petrol, 2995cc)

~30 mpg

£1,592

Road Tax

Based on 2995cc

£430

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£2,277

Per month£190/mo

Per week£44/wk

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

91% MOT pass rate(Excellent)

0%National avg: 82%100%

Excellent reliability. Very few MOT failures. That's 9 points above the national average of 82%.

At 17 years old, 91% of AUDI S4s from 2009 passed their MOT first time in 2026. That's based on 216 tests across the UK. The average mileage at this age is 92,422 miles.

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How Does It Compare?

Rank among 2009 cars54th of 575(top 9%)

Rank among AUDI models640th of 1,079(top 59%)

vs national average+9%(82% avg)

vs 2009 cars average+16%(75% avg)

vs AUDI average+1%(90% avg)

Mileage Analysis

92,422

Average miles

125,800

Expected for age

The average 2009 AUDI S4 has 92,422 miles on the clock, which is below the expected 125,800 miles for a 17-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Best Year to Buy?

The most reliable year is the 2013 model with a 94% MOT pass rate, while the 2006 model has the lowest at 78%. The 2009 sits between the two at 91%.

AUDI S4 by Year

Year	Pass Rate	Tests	Avg Mileage
2017	94%	69	57,456 mi
2015	92%	39	65,685 mi
2014	86%	170	83,424 mi
2013	94%	189	90,972 mi
2012	92%	78	82,804 mi
2011	87%	277	94,642 mi
2010	90%	277	101,140 mi
2009	91%	216	92,422 mi
2007	82%	126	83,877 mi
2006	78%	263	110,513 mi
2005	80%	169	99,307 mi
2004	81%	202	99,762 mi
2000	85%	59	152,811 mi
1999	85%	142	161,691 mi

Similar Cars to Consider

VAUXHALL INSIGNIA

2011 · 2792cc Petrol

£2,397/year

77%

-14%

LAND ROVER FREELANDER

2007 · 3192cc Petrol

£2,397/year

75%

-16%

MERCEDES E

2010 · 3495cc Petrol

£2,247/year

80%

-11%

SAAB 9-3

2007 · 2792cc Petrol

£2,397/year

76%

-15%

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About the 2009 AUDI S4

The 2009 AUDI S4 is a premium performance with a 2995cc petrol engine. 216 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. It ranks in the top 9% of all 2009 cars for reliability.

With an average of 92,422 miles at 17 years old, AUDI S4 owners tend to use this car less than the typical driver.

2009 AUDI S4 Fuel Costs

The 2995cc 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 2009 AUDI S4?

Total estimated annual running cost is £2,277 (£190/month), broken down as £1592 fuel, £430 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 91% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

AUDI S4 Reliability Trend

Newer AUDI S4s show better MOT pass rates than older ones, with an average improvement of 9 percentage points.

Buying a Used 2009 AUDI S4

At 17 years old, the AUDI S4 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 94%.

Common Issues to Watch For

Based on the 2009 AUDI S4's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 17 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 risk

Larger 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 out

At 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 out

Rubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.

Clutch Wear

Medium risk

With an average of 92k miles, clutch replacement may be due (typical lifespan 60,000-100,000 miles). Budget £400-£800 for a new clutch kit.

Brake Discs and Pads

Medium risk

High-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.

Service History

Low risk

Always 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 2009 AUDI S4 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
AUDI S4(2009)	91%	£1592	£430	Grp 30-42	£2277
VAUXHALL INSIGNIA(2011)	77%	£1592	£250	Grp 30-42	£2397+£120
LAND ROVER FREELANDER(2007)	75%	£1592	£250	Grp 35-50	£2397+£120
MERCEDES E(2010)	80%	£1592	£250	Grp 35-50	£2247-£30
SAAB 9-3(2007)	76%	£1592	£250	Grp 30-42	£2397+£120

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.