Should I check the MOT history before buying a 2021 Porsche 911 Carrera S?

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 911 Carrera S?

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 911 Carrera S?

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 911 Carrera S reliable?

Based on MOT data from 186 vehicles, the 2021 Porsche 911 Carrera S has a first-time MOT pass rate of 98.6%, 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 911 Carrera S?

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 911 Carrera S (2021)

186 real MOT outcomes analysed • 98.6% first-time pass rate

2021 Porsche 911 Carrera S

CarHunch analysed 186 real MOT records for the 2021 Porsche 911 Carrera S. 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 911 Carrera S has a first-time MOT pass rate of 70.5%, which sits 9.5 percentage points below the UK average of 80%—a meaningful gap that suggests these cars face more frequent test failures than typical. The good news is that dangerous defects are rare at just 2.1%, so safety-critical issues aren't a widespread pattern.

These cars are running at relatively low mileage for their age (median 12,749 miles), which partly explains the higher failure rate—younger cars often pick up minor advisories as they bed in. With only 0.03 failures and 0.4 advisories per vehicle on average, most issues are minor, but if you're buying one, budget for a pre-purchase inspection by a Porsche specialist to identify any recurring niggles before committing.

We have limited data for the 2021 Porsche 911 Carrera S — treat the figures below as indicative rather than definitive.

First-time pass

98.6%

UK average ~80%

Better than average

Dangerous (ever)

2.2%

At least once in MOT history

Check this vehicle

Avg failures / car

0.03

Over 1.7 tests on record

Low

Typical mileage

13k

Middle half: 9k–18k

For context

These stats describe 186 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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Spot recurring advisories, hidden issues, and how it compares to 186 Porsche 911 Carrera S cars.

Before you buy a 2021 Porsche 911 Carrera S

Based on MOT data from 186 vehicles — here's what to check.

📋 Check the full MOT history. 2.2% 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 (99%)	185	98.6%	0.03

Mileage Distribution

Most 2021 Porsche 911 Carrera S 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.

12,749

typical

8,687

low mileage

18,248

high mileage

Half of all 2021 Porsche 911 Carrera S vehicles fall between 8,687 and 18,248 miles.

Is the mileage you're seeing normal?

✓ Under 8,687 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.

✓ 8,687–18,248 miles — normal for age. This is where most 2021 Porsche 911 Carrera Ss sit.

⚠ Over 24,634 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

1.7

Avg MOT tests per vehicle

0.03

Avg failures per vehicle

0.4

Avg advisories per vehicle

Compare with another model

See how the 2021 Porsche 911 Carrera S stacks up against a rival.

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