Mercedes Benz

Mercedes Benz Gla 180 Amg Line Premium + A (2021)

507 real MOT outcomes analysed • 93.5% first-time pass rate

2021 Mercedes Benz Gla 180 Amg Line Premium + A

CarHunch analysed 507 real MOT records for the 2021 Mercedes Benz Gla 180 Amg Line Premium + A. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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This 2021 GLA 180 is a strong MOT performer, with a 92.3% first-time pass rate that sits well above the UK average of 80%. The low dangerous defect rate of 5.7% is reassuring, suggesting this model doesn't carry unusual safety risks for buyers.

At an average mileage of 28,757 miles for a three-year-old car, these examples are running fairly hard, yet they're still posting excellent pass rates with only 0.22 failures per vehicle on average. The 1.4 advisories per car suggest minor wear items crop up occasionally, so factor in routine maintenance costs when budgeting—but overall, this is a reliable choice that should pass its next test without drama.

The 2021 Mercedes Benz Gla 180 Amg Line Premium + A passes its MOT first time more often than most UK vehicles (93.5% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

⚠️ Around 1 in 20 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
93.5%
UK average ~80%
Better than average
Dangerous (ever)
5.7%
At least once in MOT history
Check this vehicle
Avg failures / car
0.22
Over 2.4 tests on record
Low
Typical mileage
26k
Middle half: 18k–36k
For context
Good baseline reliability. A 93.5% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.
🔍 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 507 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.

A solid choice — agree?

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 507 Mercedes Benz Gla 180 Amg Line Premium + A cars.

UK

Before you buy a 2021 Mercedes Benz Gla 180 Amg Line Premium + A

Based on MOT data from 507 vehicles — here's what to check.

  • 📋 Check the full MOT history. 5.7% 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 (99%) 501 93.4% 0.22

Colour Breakdown

Based on 669 Mercedes Benz Gla 180 Amg Line Premium + A vehicles registered in the UK — across all years. From DVLA registration records.

Black 39.3%
263
Grey 23.6%
158
White 17%
114
Blue 9.7%
65
Red 5.8%
39
Silver 4.5%
30

Mileage Distribution

Most 2021 Mercedes Benz Gla 180 Amg Line Premium + 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.

26,237
typical
17,866
low mileage
35,723
high mileage

Half of all 2021 Mercedes Benz Gla 180 Amg Line Premium + A vehicles fall between 17,866 and 35,723 miles.

Is the mileage you're seeing normal?
Under 17,866 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.
17,866–35,723 miles — normal for age. This is where most 2021 Mercedes Benz Gla 180 Amg Line Premium + As sit.
Over 48,226 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

MOT History Averages

2.4
Avg MOT tests per vehicle
0.22
Avg failures per vehicle
1.4
Avg advisories per vehicle
Other model years — Mercedes Benz Gla 180 Amg Line Premium + A: All Gla 180 Amg Line Premium + A years → Which year to buy? →
2022

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