Should I check the MOT history before buying a 2020 Mercedes Benz Gla?

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 2020 Mercedes Benz Gla?

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 2020 Mercedes Benz Gla?

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.

Is the 2020 Mercedes Benz Gla reliable?

Based on MOT data from 1,316 vehicles, the 2020 Mercedes Benz Gla has a first-time MOT pass rate of 91.5%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2020 Mercedes Benz Gla?

The most frequently recorded MOT issues on the 2020 Mercedes Benz Gla are: Offside Front Tyre worn close to legal limit/worn on edge (31.9% of vehicles), Nearside Front Tyre worn close to legal limit/worn on edge (31.9% of vehicles), Front Brake pad(s) wearing thin (18.7% 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 2020 Mercedes Benz Gla?

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 Gla (2020)

1,316 real MOT outcomes analysed • 91.5% first-time pass rate

2020 Mercedes Benz Gla

CarHunch analysed 1,316 real MOT records for the 2020 Mercedes Benz Gla. 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 2020 Mercedes-Benz GLA is a reliable performer, with a first-time MOT pass rate of 91.5% — well above the UK average of 80%. However, nearly one in five examples (19.2%) have experienced a dangerous defect at some point, which is worth factoring into your pre-purchase inspection.

At an average mileage of 30,066 miles for a four-year-old car, these are relatively lightly driven examples, which helps explain the strong pass rate. The typical car accumulates just 0.4 failures and 2.8 advisories per test, suggesting straightforward maintenance costs — but get a full diagnostic on any used example you're considering, given the dangerous defect history.

The 2020 Mercedes Benz Gla passes its MOT first time at roughly the UK average rate (91.5%) — solid but worth checking this vehicle's history carefully.

⚠️ Around 1 in 8 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

91.5%

UK average ~80%

Better than average

Dangerous (ever)

19.2%

At least once in MOT history

Check this vehicle

Avg failures / car

0.4

Over 3.7 tests on record

Low

Typical mileage

29k

Middle half: 21k–37k

For context

✅ Good baseline reliability. A 91.5% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

🔧 Expect consumable spend. An average of 2.8 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 1,316 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.

Average reliability — agree?

What tends to go wrong

Across 1,316 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 31.9%

Offside Front Tyre worn close to legal limit/worn on edge · Nearside Front Tyre worn close to legal limit/worn on edge · Nearside Rear Tyre slightly damaged/cracking or perishing · …

Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.

Brake wear 18.7%

Front Brake pad(s) wearing thin · Rear Brake pad(s) wearing thin · Front Brake disc worn, pitted or scored, but not seriously weakened · …

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

Other issues 9.3%

Nearside Rear Child Seat fitted not allowing full inspection of adult belt

Data covers a 3-year window centred on 2020.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 1,316 Mercedes Benz Gla cars.

Before you buy a 2020 Mercedes Benz Gla

Based on MOT data from 1,316 vehicles — here's what to check.

📋 Check the full MOT history. 19.2% 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 (100%)	1,314	91.5%	0.4

Colour Breakdown

Based on 66,523 Mercedes Benz Gla vehicles registered in the UK — across all years. From DVLA registration records.

Grey 28.6%

19,037

Black 26.4%

17,574

White 20.3%

13,537

Red 8.6%

5,702

Silver 7.9%

5,250

Blue 6.2%

4,097

Purple 0.8%

518

Green 0.6%

391

Bronze 0.4%

297

Beige 0.2%

101

Brown 0%

Gold 0%

Mileage Distribution

Most 2020 Mercedes Benz Gla 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.

28,657

typical

20,566

low mileage

37,326

high mileage

Half of all 2020 Mercedes Benz Gla vehicles fall between 20,566 and 37,326 miles.

Is the mileage you're seeing normal?

✓ Under 20,566 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.

✓ 20,566–37,326 miles — normal for age. This is where most 2020 Mercedes Benz Glas sit.

⚠ Over 50,390 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2020 Mercedes Benz Gla — Still on the Road

Almost all 2020 Mercedes Benz Glas are still on the road.

Strong survival — 1,269 vehicles still getting MOTs in 2025, 99% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2022–2025.

MOT History Averages

3.7

Avg MOT tests per vehicle

0.4

Avg failures per vehicle

2.8

Avg advisories per vehicle

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

2014 2015 2016 2017 2018 2019

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See how the 2020 Mercedes Benz Gla stacks up against a rival.

Average reliability — agree?