Should I check the MOT history before buying a 2004 Mercedes Benz C?

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 Mercedes Benz C?

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 Mercedes Benz C?

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 Mercedes Benz C vehicles have had dangerous defects recorded?

44% 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 Mercedes Benz C reliable?

Based on MOT data from 27,740 vehicles, the 2004 Mercedes Benz C has a first-time MOT pass rate of 73.6%, 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 Mercedes Benz C?

The most frequently recorded MOT issues on the 2004 Mercedes Benz C are: Nearside Rear Tyre worn close to the legal limit (92.6% of vehicles), Offside Rear Tyre worn close to the legal limit (91.3% of vehicles), Under-trays fitted obscuring some underside components (66.3% 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 Mercedes Benz C?

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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Mercedes Benz C (2004)

27,740 real MOT outcomes analysed • 73.6% first-time pass rate

2004 Mercedes Benz C

CarHunch analysed 27,740 real MOT records for the 2004 Mercedes Benz C. 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 Mercedes-Benz C falls notably short of the UK average, with a first-time pass rate of 73.6% compared to 80%, and a serious red flag emerges in the fact that 44.4% of these cars have recorded a dangerous defect at some point—nearly double the typical concern threshold. Petrol and diesel versions perform nearly identically (73.8% vs 73.3%), so fuel type won't be your differentiator here.

At 74,500 miles median mileage, these cars are reasonably well-used for their age, which partly explains the high failure count of 4.91 per vehicle, but the real issue is the mountain of minor wear: an average of 24.8 advisories per car signals chronic nickel-and-diming repairs ahead. Before buying, get a full pre-purchase inspection focusing on suspension, cooling, and electrical systems—the most common weak points on this generation—and budget for consistent maintenance if you want reliability.

The 2004 Mercedes Benz C has a below-average first-time pass rate (73.6% vs ~80% UK average) — check the specific vehicle's full MOT history carefully before buying.

⚠️ 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

73.6%

UK average ~80%

Below average

Dangerous (ever)

44.4%

At least once in MOT history

Check this vehicle

Avg failures / car

4.91

Over 17.6 tests on record

High

Typical mileage

74k

Middle half: 58k–93k

For context

⚠️ Below average. More vehicles in this cohort fail their first MOT than typical. Scrutinise this vehicle's history — look for recurring issues, not just the latest result.

🔧 Expect consumable spend. An average of 24.8 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 27,740 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.

Buyer beware — pass it on

What tends to go wrong

Across 27,740 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 92.6%

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 66.3%

Under-trays fitted obscuring some underside components · Engine covers fitted obscuring some components in the engine bay

Brake wear 34.3%

Front Brake pad(s) wearing thin · Rear Brake pad(s) wearing thin · Nearside Rear Brake pipe corroded, covered in grease or other material · …

Ask the seller when brakes were last serviced. If they don't know, factor in the cost.

Suspension & steering 25.8%

Offside Rear Coil spring corroded · Nearside Rear Coil spring corroded

Harder to spot without a ramp — this is a good reason to book a pre-purchase inspection.

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 27,740 Mercedes Benz C cars.

Before you buy a 2004 Mercedes Benz C

Based on MOT data from 27,740 vehicles — here's what to check.

📋 Check the full MOT history. 44.4% 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
Petrol (57%)	15,779	73.8%	5
Diesel (43%)	11,940	73.3%	4.78

Colour Breakdown

Based on 667,977 Mercedes Benz C vehicles registered in the UK — across all years. From DVLA registration records.

Silver 34.7%

231,844

Black 24.7%

164,730

Blue 14.6%

97,214

White 9.6%

64,104

Grey 9.1%

60,907

Red 4.2%

28,290

Green 1.9%

12,661

Beige 0.4%

2,836

Purple 0.3%

1,844

Gold 0.2%

1,650

Brown 0.1%

994

Orange 0.1%

903

Mileage Distribution

Most 2004 Mercedes Benz C 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.

74,473

typical

57,728

low mileage

93,011

high mileage

Half of all 2004 Mercedes Benz C vehicles fall between 57,728 and 93,011 miles.

Is the mileage you're seeing normal?

✓ Under 57,728 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.

✓ 57,728–93,011 miles — normal for age. This is where most 2004 Mercedes Benz Cs sit.

⚠ Over 125,564 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2004 Mercedes Benz C — Still on the Road

Numbers are thinning — 22% of 2004 Mercedes Benz Cs are still active.

Numbers are declining — 5,022 vehicles still getting MOTs in 2025 (22% 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

17.6

Avg MOT tests per vehicle

4.91

Avg failures per vehicle

24.8

Avg advisories per vehicle

Other model years — Mercedes Benz C: All C years → Which year to buy? →

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