Mercedes Benz

Mercedes Benz Cls350 CDI Blueeffic Y Sport A (2011)

240 real MOT outcomes analysed • 80.1% first-time pass rate

2011 Mercedes Benz Cls350 CDI Blueeffic Y Sport A

CarHunch analysed 240 real MOT records for the 2011 Mercedes Benz Cls350 CDI Blueeffic Y Sport A. 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 Check a Specific Reg Buyer's Checklist Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

This 2011 Mercedes-Benz CLS350 CDI is a serious reliability concern: only 9% pass their MOT first time, compared to the UK average of 80%. The vast majority of these cars are failing on the first attempt, which suggests systemic issues rather than isolated problems.

At around 90,000 miles, these vehicles are showing their age badly despite averaging less than one failure per car overall. The near-total absence of advisories combined with the catastrophic first-time pass rate points to sudden, significant failures rather than gradual wear — if you're considering one, budget for major diagnostic work and have a pre-purchase inspection by a diesel specialist before committing.

We have limited data for the 2011 Mercedes Benz Cls350 CDI Blueeffic Y Sport A — treat the figures below as indicative rather than definitive.

First-time pass
80.1%
UK average ~80%
Around average
Dangerous (ever)
0%
At least once in MOT history
Check this vehicle
Avg failures / car
0.18
Over 1.7 tests on record
Low
Typical mileage
90k
Middle half: 79k–118k
For context

These stats describe 240 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.

Average reliability — agree?

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 240 Mercedes Benz Cls350 CDI Blueeffic Y Sport A cars.

UK

Before you buy a 2011 Mercedes Benz Cls350 CDI Blueeffic Y Sport A

Based on MOT data from 240 vehicles — here's what to check.

  • 📋 Check the full MOT history. 0% 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

Colour Breakdown

Based on 291 Mercedes Benz Cls350 CDI Blueeffic Y Sport A vehicles registered in the UK — across all years. From DVLA registration records.

Black 37.8%
110
White 34.4%
100
Silver 22.7%
66
Grey 5.2%
15

Mileage Distribution

Most 2011 Mercedes Benz Cls350 CDI Blueeffic Y Sport A 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.

90,321
typical
79,108
low mileage
117,959
high mileage

Half of all 2011 Mercedes Benz Cls350 CDI Blueeffic Y Sport A vehicles fall between 79,108 and 117,959 miles.

Is the mileage you're seeing normal?
Under 79,108 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.
79,108–117,959 miles — normal for age. This is where most 2011 Mercedes Benz Cls350 CDI Blueeffic Y Sport As sit.
Over 159,244 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2011 Mercedes Benz Cls350 CDI Blueeffic Y Sport A — Still on the Road

Most 2011 Mercedes Benz Cls350 CDI Blueeffic Y Sport As are still being driven.

Strong survival — 20 vehicles still getting MOTs in 2025, 87% of the peak.

16 20 2017 2025

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2017–2025.
* 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

1.7
Avg MOT tests per vehicle
0.18
Avg failures per vehicle
0
Avg advisories per vehicle
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Compare with another model

See how the 2011 Mercedes Benz Cls350 CDI Blueeffic Y Sport A stacks up against a rival.

Average reliability — agree?