Should I check the MOT history before buying a 2021 Mercedes Benz Cla 220 Amg Line Premium + D A?

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 2021 Mercedes Benz Cla 220 Amg Line Premium + D A?

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 2021 Mercedes Benz Cla 220 Amg Line Premium + D A?

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.

Do I need an HPI check when buying a 2021 Mercedes Benz Cla 220 Amg Line Premium + D A?

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 Cla 220 Amg Line Premium + D A (2021)

Q: Is the 2021 Mercedes Benz Cla 220 Amg Line Premium + D A reliable?

Based on MOT data from 996 vehicles, the 2021 Mercedes Benz Cla 220 Amg Line Premium + D A has a first-time MOT pass rate of 91.3%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

996 real MOT outcomes analysed • 91.3% first-time pass rate

2021 Mercedes Benz Cla 220 Amg Line Premium + D A

CarHunch analysed 996 real MOT records for the 2021 Mercedes Benz Cla 220 Amg Line Premium + D 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 2021 CLA 220 diesel is more reliable than the UK average, with an 89.2% first-time pass rate against the 80% benchmark, and only 12.7% of vehicles have ever recorded a dangerous defect—a low concern for safety-critical issues. The average car has seen just 0.28 failures and 2.0 advisories per test, suggesting these are fundamentally sound vehicles with only minor wear items flagged.

At 31,330 miles median for a three-year-old car, mileage is typical for age, and you can expect one or two minor advisory items (worn brake pads, fluid levels) on any example you inspect. Check the service history carefully and budget for routine maintenance, but this generation isn't throwing up systemic problems that should deter you from the purchase.

The 2021 Mercedes Benz Cla 220 Amg Line Premium + D A passes its MOT first time more often than most UK vehicles (91.3% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

⚠️ 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

91.3%

UK average ~80%

Better than average

Dangerous (ever)

12.7%

At least once in MOT history

Check this vehicle

Avg failures / car

0.28

Over 2.3 tests on record

Low

Typical mileage

31k

Middle half: 24k–40k

For context

✅ Good baseline reliability. A 91.3% 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 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 996 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.

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See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 996 Mercedes Benz Cla 220 Amg Line Premium + D A cars.

Before you buy a 2021 Mercedes Benz Cla 220 Amg Line Premium + D A

Based on MOT data from 996 vehicles — here's what to check.

📋 Check the full MOT history. 12.7% 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 →
📄 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

Colour Breakdown

Based on 4,458 Mercedes Benz Cla 220 Amg Line Premium + D A vehicles registered in the UK — across all years. From DVLA registration records.

Black 31%

1,384

Grey 25.8%

1,149

White 22.3%

993

Blue 11.4%

508

Silver 5.8%

260

Red 3.7%

164

Mileage Distribution

Most 2021 Mercedes Benz Cla 220 Amg Line Premium + D 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.

31,330

typical

24,392

low mileage

39,765

high mileage

Half of all 2021 Mercedes Benz Cla 220 Amg Line Premium + D A vehicles fall between 24,392 and 39,765 miles.

Is the mileage you're seeing normal?

✓ Under 24,392 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.

✓ 24,392–39,765 miles — normal for age. This is where most 2021 Mercedes Benz Cla 220 Amg Line Premium + D As sit.

⚠ Over 53,682 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2021 Mercedes Benz Cla 220 Amg Line Premium + D A — Still on the Road

Almost all 2021 Mercedes Benz Cla 220 Amg Line Premium + D As are still on the road.

Strong survival — 942 vehicles still getting MOTs in 2025, 100% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2023–2025.

MOT History Averages

2.3

Avg MOT tests per vehicle

0.28

Avg failures per vehicle

Avg advisories per vehicle

Other model years — Mercedes Benz Cla 220 Amg Line Premium + D A: All Cla 220 Amg Line Premium + D A years → Which year to buy? →

2019 2020 2022 2023 2024 2025

Or browse all models: Mercedes Benz →

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