Should I check the MOT history before buying a 2004 Audi A8?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 2004 Audi A8?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 2004 Audi A8?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

How many 2004 Audi A8 vehicles have had dangerous defects recorded?

26% of these vehicles have had a dangerous defect recorded. Search the registration on CarHunch — the full MOT history will show exactly what was flagged and whether it was resolved.

Is the 2004 Audi A8 reliable?

Based on MOT data from 1,229 vehicles, the 2004 Audi A8 has a first-time MOT pass rate of 81.9%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2004 Audi A8?

The most frequently recorded MOT issues on the 2004 Audi A8 are: Nearside Rear Tyre worn close to the legal limit (64.4% of vehicles), Offside Rear Tyre worn close to the legal limit (62.4% of vehicles), Under-trays fitted obscuring some underside components (54.8% of vehicles). These figures are based on actual MOT test records — search a specific registration on CarHunch to see its individual history.

Do I need an HPI check when buying a 2004 Audi A8?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

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Audi A8 (2004)

1,229 real MOT outcomes analysed • 81.9% first-time pass rate

2004 Audi A8

CarHunch analysed 1,229 real MOT records for the 2004 Audi A8. 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 Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2004 Audi A8 passes its MOT on the first attempt 81.9% of the time, marginally ahead of the UK average of 80%, but a worrying 26% of these cars have recorded a dangerous defect at some point—well above the threshold where you'd want to be cautious about purchase. Diesel and petrol variants perform almost identically (82.0% vs 81.6% pass rates), so fuel choice doesn't meaningfully affect reliability here.

At an average mileage of 100,945 miles for a 20-year-old car, these A8s are running above the typical wear profile, and they're accumulating serious problems: 2.69 failures per test and 13.1 advisories suggest ongoing maintenance demands and degraded components. If you're considering one, have a pre-purchase inspection focus on the suspension, electrical systems, and brakes—the high advisory count points to age-related wear in these areas—and factor in regular specialist servicing costs.

The 2004 Audi A8 has a decent first-time pass rate (81.9%), 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

81.9%

UK average ~80%

Around average

Dangerous (ever)

26%

At least once in MOT history

Check this vehicle

Avg failures / car

2.69

Over 13.9 tests on record

High

Typical mileage

104k

Middle half: 84k–125k

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 13.1 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 1,229 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 1,229 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 64.4%

Nearside Rear Tyre worn close to the legal limit · Offside Rear Tyre worn close to the legal limit · Nearside Front 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 54.8%

Under-trays fitted obscuring some underside components · Engine covers fitted obscuring some components in the engine bay · Windscreen has damage to an area less than a 40mm circle outside zone 'A' · …

Brake wear 24.1%

Rear Brake pad(s) wearing thin · Front brake disc worn, pitted or scored, but not seriously weakened · Front 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 2004.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 1,229 Audi A8 cars.

Before you buy a 2004 Audi A8

Based on MOT data from 1,229 vehicles — here's what to check.

📋 Check the full MOT history. 26% 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 →
📄 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 Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Diesel (56%)	690	82%	2.59
Petrol (43%)	526	81.6%	2.82

Colour Breakdown

Based on 23,130 Audi A8 vehicles registered in the UK — across all years. From DVLA registration records.

Black 31.7%

7,340

Silver 22.7%

5,254

Grey 19.3%

4,468

Blue 16.6%

3,842

Green 4.9%

1,144

White 2.1%

497

Red 1.5%

340

Beige 0.5%

113

Gold 0.2%

Purple 0.2%

Brown 0.1%

Maroon 0.1%

Mileage Distribution

Most 2004 Audi A8 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.

104,309

typical

84,439

low mileage

125,277

high mileage

Half of all 2004 Audi A8 vehicles fall between 84,439 and 125,277 miles.

Is the mileage you're seeing normal?

✓ Under 84,439 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.

✓ 84,439–125,277 miles — normal for age. This is where most 2004 Audi A8s sit.

⚠ Over 169,123 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2004 Audi A8 — Still on the Road

Numbers are thinning — 18% of 2004 Audi A8s are still active.

Numbers are declining — 160 vehicles still getting MOTs in 2025 (18% of peak).

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

13.9

Avg MOT tests per vehicle

2.69

Avg failures per vehicle

13.1

Avg advisories per vehicle

Other model years — Audi A8: All A8 years → Which year to buy? →

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Watch for defects — worth knowing