Should I check the MOT history before buying a 2021 Porsche 718 Cayman Gt4 S 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 Porsche 718 Cayman Gt4 S 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 Porsche 718 Cayman Gt4 S 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.

Is the 2021 Porsche 718 Cayman Gt4 S A reliable?

Based on MOT data from 176 vehicles, the 2021 Porsche 718 Cayman Gt4 S A has a first-time MOT pass rate of 96.4%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

Do I need an HPI check when buying a 2021 Porsche 718 Cayman Gt4 S 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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Porsche 718 Cayman Gt4 S A (2021)

176 real MOT outcomes analysed • 96.4% first-time pass rate

2021 Porsche 718 Cayman Gt4 S A

CarHunch analysed 176 real MOT records for the 2021 Porsche 718 Cayman Gt4 S 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 Pass Rate by Fuel Mileage Distribution MOT Averages Compare Models

The 2021 Porsche 718 Cayman GT4 S-A is a genuinely reliable performer, with a 92.5% first-time MOT pass rate that sits 12.5 percentage points above the UK average—a significant margin for a sports car. Only 1.1% have ever recorded a dangerous defect, so safety isn't a concern here.

These cars are running low mileage for their age (median 10,473 miles), which explains both the strong pass rate and the minimal failure load of 0.11 per vehicle on average. If you're buying one, check the service history carefully since low mileage combined with infrequent use can mask deferred maintenance on brakes, cooling systems, and fuel injectors common to high-performance engines.

We have limited data for the 2021 Porsche 718 Cayman Gt4 S A — treat the figures below as indicative rather than definitive.

First-time pass

96.4%

UK average ~80%

Better than average

Dangerous (ever)

1.1%

At least once in MOT history

Check this vehicle

Avg failures / car

0.11

Over 2.1 tests on record

Low

Typical mileage

10k

Middle half: 6k–16k

For context

These stats describe 176 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 176 Porsche 718 Cayman Gt4 S A cars.

Before you buy a 2021 Porsche 718 Cayman Gt4 S A

Based on MOT data from 176 vehicles — here's what to check.

📋 Check the full MOT history. 1.1% 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 (99%)	174	96.3%	0.11

Mileage Distribution

Most 2021 Porsche 718 Cayman Gt4 S 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.

10,473

typical

6,342

low mileage

15,939

high mileage

Half of all 2021 Porsche 718 Cayman Gt4 S A vehicles fall between 6,342 and 15,939 miles.

Is the mileage you're seeing normal?

✓ Under 6,342 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.

✓ 6,342–15,939 miles — normal for age. This is where most 2021 Porsche 718 Cayman Gt4 S As sit.

⚠ Over 21,517 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

2.1

Avg MOT tests per vehicle

0.11

Avg failures per vehicle

0.4

Avg advisories per vehicle

Other model years — Porsche 718 Cayman Gt4 S A: All 718 Cayman Gt4 S A years → Which year to buy? →

2022 2023

Or browse all models: Porsche →

Compare with another model

See how the 2021 Porsche 718 Cayman Gt4 S A stacks up against a rival.

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