Audi

Audi A4 (2006)

32,459 real MOT outcomes analysed • 78.4% first-time pass rate

2006 Audi A4

CarHunch analysed 32,459 real MOT records for the 2006 Audi A4. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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AI Analysis Reliability Overview Common Issues Check a Specific Reg Petrol vs Diesel Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2006 Audi A4's 78.4% pass rate sits just below the UK average of 80%, which is unremarkable for a car of this age—but the 41.2% of vehicles that have recorded dangerous defects at some point is a genuine concern and well above typical, suggesting electrical, brake, or structural issues have plagued a significant portion of the fleet. Diesel variants perform marginally worse at 77.9% versus 79.4% for petrol, though the difference is modest.

These cars are running at around 104,000 miles median, which is sensible for their age, yet they're generating an average of 3.79 failures and 21.2 advisories per test—indicating wear accumulation and a propensity for multiple small issues rather than one catastrophic problem. Before buying one, obtain a full service history and have a pre-purchase inspection focus specifically on the suspension, cooling system, and electrical components, as these typically drive the advisory counts on this generation.

The 2006 Audi A4 has a decent first-time pass rate (78.4%), but a higher-than-average share of vehicles have had serious defects recorded — the individual vehicle's history matters a lot here.

⚠️ Over 1 in 5 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.
First-time pass
78.4%
UK average ~80%
Around average
Dangerous (ever)
41.2%
At least once in MOT history
Check this vehicle
Avg failures / car
3.79
Over 16.5 tests on record
High
Typical mileage
104k
Middle half: 84k–126k
For context
🔧 Average reliability. Passes at roughly the UK rate — not a standout, not a problem vehicle. Individual history makes all the difference.
🔧 Expect consumable spend. An average of 21.2 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.
🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 32,459 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

Watch for defects — worth knowing

What tends to go wrong

Across 32,459 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 78.3%
Nearside Front Tyre worn close to the legal limit · Offside Front Tyre worn close to the legal limit · Nearside Rear Tyre worn close to the legal limit · …
Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.
Other issues 59.4%
Under-trays fitted obscuring some underside components · Oil leak, but not excessive · Engine covers fitted obscuring some components in the engine bay · …
Brake wear 46.7%
Nearside Rear Brake hose slightly deteriorated · Offside Rear Brake hose slightly deteriorated · Rear Brake pad(s) wearing thin
Ask the seller when brakes were last serviced. If they don't know, factor in the cost.

Data covers a 3-year window centred on 2006.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 32,459 Audi A4 cars.

UK

Petrol vs Diesel

Pass rate difference of 1.6 percentage points — worth knowing if you're choosing between the two.

79.5%
Petrol
10,738 vehicles
77.9%
Diesel
21,709 vehicles

Before you buy a 2006 Audi A4

Based on MOT data from 32,459 vehicles — here's what to check.

  • 📋 Check the full MOT history. 41.2% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
    Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
  • 🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection ClickMechanic
  • 📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History carVertical Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type Vehicles Pass rate Avg failures
Diesel (67%) 21,709 77.9% 3.8
Petrol (33%) 10,738 79.5% 3.76

Colour Breakdown

Based on 554,172 Audi A4 vehicles registered in the UK — across all years. From DVLA registration records.

Black 23.9%
132,698
Blue 20.6%
114,295
Grey 18.8%
104,383
Silver 18.1%
100,570
Red 7.2%
39,833
White 7%
38,520
Green 3.4%
19,117
Beige 0.4%
1,950
Yellow 0.2%
912
Purple 0.2%
889
Gold 0.1%
581
Brown 0.1%
424

Mileage Distribution

Most 2006 Audi A4 vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

104,269
typical
84,034
low mileage
126,282
high mileage

Half of all 2006 Audi A4 vehicles fall between 84,034 and 126,282 miles.

Is the mileage you're seeing normal?
Under 84,034 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.
84,034–126,282 miles — normal for age. This is where most 2006 Audi A4s sit.
Over 170,480 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2006 Audi A4 — Still on the Road

Numbers are thinning — 35% of 2006 Audi A4s are still active.

Numbers are declining — 9,981 vehicles still getting MOTs in 2025 (35% of peak).

28,686 9,981 2014 2025

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

16.5
Avg MOT tests per vehicle
3.79
Avg failures per vehicle
21.2
Avg advisories per vehicle
Other model years — Audi A4: All A4 years → Which year to buy? →
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Compare with another model

See how the 2006 Audi A4 stacks up against a rival.

Watch for defects — worth knowing