Mercedes Benz

Mercedes Benz A Class (2005)

10,316 real MOT outcomes analysed • 76.6% first-time pass rate

2005 Mercedes Benz A Class

CarHunch analysed 10,316 real MOT records for the 2005 Mercedes Benz A Class. 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 2005 Mercedes-Benz A-Class falls slightly short of the UK average with a 76.6% pass rate, and here's the real concern: over a third (33.6%) have recorded dangerous defects during their MOT history, which is unusually high and a genuine red flag for buyers. Petrol models fare marginally better at 77.4% pass rate versus diesel at 74.9%, though neither inspires confidence.

These cars are averaging around 64,000 miles, which is reasonable for their age, but they're racking up 4.14 failures per vehicle on test—well above what you'd expect for a car of this mileage. The high advisory count (17.9 per car) points to widespread wear and deterioration across multiple systems rather than one glaring weakness. Before buying one, get a full pre-purchase inspection with particular focus on suspension geometry and brake condition, as these defects cluster heavily on this generation.

The 2005 Mercedes Benz A Class has a decent first-time pass rate (76.6%), 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
76.6%
UK average ~80%
Around average
Dangerous (ever)
33.6%
At least once in MOT history
Check this vehicle
Avg failures / car
4.14
Over 16.9 tests on record
High
Typical mileage
58k
Middle half: 44k–72k
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 17.9 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 10,316 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 10,316 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Other issues 68.2%
Under-trays fitted obscuring some underside components · Child seat fitted not allowing full inspection of adult belt · Engine covers fitted obscuring some components in the engine bay
Tyre wear 65.6%
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.
Brake wear 32.5%
Front Brake pad(s) wearing thin · Nearside Rear Brake pipe corroded, covered in grease or other material · Offside 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.
Lighting 22%
Nearside Stop lamp not working
Usually cheap to fix. Worth confirming all lights work before collecting.

Data covers a 3-year window centred on 2005.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 10,316 Mercedes Benz A Class cars.

UK

Petrol vs Diesel

Pass rate difference of 2.5 percentage points — worth knowing if you're choosing between the two.

77.4%
Petrol
6,859 vehicles
74.9%
Diesel
3,457 vehicles

Before you buy a 2005 Mercedes Benz A Class

Based on MOT data from 10,316 vehicles — here's what to check.

  • 📋 Check the full MOT history. 33.6% 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
Petrol (66%) 6,859 77.4% 4.02
Diesel (34%) 3,457 74.9% 4.37

Colour Breakdown

Based on 357,326 Mercedes Benz A Class vehicles registered in the UK — across all years. From DVLA registration records.

Silver 22.6%
80,871
Black 21%
75,201
Grey 17.8%
63,753
White 14.2%
50,872
Blue 13.2%
47,323
Red 7.3%
26,262
Green 2%
7,021
Purple 0.6%
2,227
Gold 0.6%
2,071
Brown 0.3%
1,250
Orange 0.1%
266
Bronze 0.1%
209

Mileage Distribution

Most 2005 Mercedes Benz A Class 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.

58,026
typical
44,120
low mileage
71,900
high mileage

Half of all 2005 Mercedes Benz A Class vehicles fall between 44,120 and 71,900 miles.

Is the mileage you're seeing normal?
Under 44,120 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.
44,120–71,900 miles — normal for age. This is where most 2005 Mercedes Benz A Classs sit.
Over 97,065 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2005 Mercedes Benz A Class — Still on the Road

Numbers are thinning — 24% of 2005 Mercedes Benz A Classs are still active.

Numbers are declining — 2,206 vehicles still getting MOTs in 2025 (24% of peak).

9,227 2,206 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

16.9
Avg MOT tests per vehicle
4.14
Avg failures per vehicle
17.9
Avg advisories per vehicle
Other model years — Mercedes Benz A Class: All A Class years → Which year to buy? →
1998 1999 2000 2001 2002 2003 2004 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Or browse all models: Mercedes Benz →

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Compare with another model

See how the 2005 Mercedes Benz A Class stacks up against a rival.

Watch for defects — worth knowing