Mercedes Benz C180 Sport Blueefficiency Auto (2012)

322 real MOT outcomes analysed • 6.3% first-time pass rate

2012 Mercedes Benz C180 Sport Blueefficiency Auto

CarHunch analysed 322 real MOT records for the 2012 Mercedes Benz C180 Sport Blueefficiency Auto. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

This 2012 C180 is a serious reliability red flag: just 6.2% of these cars pass their MOT first time, compared to the UK average of 80%, and the petrol version fares even worse at 0.6%. While dangerous defects are rare at 0%, the sheer scale of failure—with virtually every test requiring work—suggests chronic underlying issues across this cohort.

The median mileage of 79,435 miles is reasonable for a 12-year-old car, yet these vehicles still accumulate 0.1 failures per test on average, indicating persistent mechanical problems unrelated to age alone. If you're considering this model, budget heavily for repairs and get a thorough pre-purchase inspection by a Mercedes specialist; this isn't a car to buy cheaply expecting to save money on maintenance.

Below average reliability 73.7% below UK average
6.3%
pass MOT first time
UK average: ~80%
79,435
typical mileage
11,902–79,435 middle half
0%
ever had a dangerous defect
recorded at any MOT
0.1
avg MOT failures per car
over 1.5 tests on record

What to check before buying a 2012 Mercedes Benz C180 Sport Blueefficiency Auto

Practical pre-purchase checks for this age and model.

  • 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
  • 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
  • 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
  • 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.

Before you buy a Mercedes Benz C180 Sport Blueefficiency Auto

MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.

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Pass Rate by Fuel Type

Fuel type Vehicles Pass rate Avg failures
Petrol (93%) 300 0.6% 0.01
Other (7%) 22 83.9% 1.36

Mileage Distribution

Most 2012 Mercedes Benz C180 Sport Blueefficiency Auto vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.

11,902
low mileage
79,435
typical
79,435
high mileage

Half of all 2012 Mercedes Benz C180 Sport Blueefficiency Auto vehicles fall between 11,902 and 79,435 miles.

2012 Mercedes Benz C180 Sport Blueefficiency Auto — Still on the Road

16 vehicles still getting MOTs in 2025 — 73% of the peak remain.

12 16 2017 2025

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

MOT History Averages

1.5
Avg MOT tests per vehicle
0.1
Avg failures per vehicle
0
Avg advisories per vehicle

Found a specific Mercedes Benz C180 Sport Blueefficiency Auto?

Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.

UK

Other model years — Mercedes Benz C180 Sport Blueefficiency Auto:

2011