Should I check the MOT history before buying a 2018 Porsche 911?

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 2018 Porsche 911?

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 2018 Porsche 911?

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 2018 Porsche 911 reliable?

Based on MOT data from 2,341 vehicles, the 2018 Porsche 911 has a first-time MOT pass rate of 95.2%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2018 Porsche 911?

The most frequently recorded MOT issues on the 2018 Porsche 911 are: Nearside Rear Tyre worn close to legal limit/worn on edge (22.6% of vehicles), Offside Rear Tyre worn close to legal limit/worn on edge (21.9% of vehicles), Offside Front Tyre slightly damaged/cracking or perishing (16.9% 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 2018 Porsche 911?

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 (2018)

2,341 real MOT outcomes analysed • 95.2% first-time pass rate

2018 Porsche 911

CarHunch analysed 2,341 real MOT records for the 2018 Porsche 911. 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 Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2018 Porsche 911 is a genuinely reliable proposition, with a 91.5% first-time MOT pass rate that sits well above the UK average of 80%, and a low dangerous defect rate of just 9.4% means serious safety issues are uncommon. These are well-maintained cars overall, which tracks with the low failure rate of 0.29 per vehicle across the cohort.

With a median mileage of just 13,678 miles, these are lightly-driven examples that haven't seen hard use, and the modest advisory count of 1.6 per vehicle suggests maintenance is being kept on top of. If you're considering one, check the service history closely and budget for any advisories flagged—Porsche parts and labour aren't cheap, but these cars reward proper upkeep.

The 2018 Porsche 911 passes its MOT first time more often than most UK vehicles (95.2% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

⚠️ About 1 in 12 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

95.2%

UK average ~80%

Better than average

Dangerous (ever)

9.4%

At least once in MOT history

Check this vehicle

Avg failures / car

0.29

Over 5.1 tests on record

Low

Typical mileage

14k

Middle half: 8k–21k

For context

✅ Good baseline reliability. A 95.2% 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 1.6 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 2,341 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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What tends to go wrong

Across 2,341 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 22.6%

Nearside Rear Tyre worn close to legal limit/worn on edge · Offside Rear Tyre worn close to legal limit/worn on edge · Offside Front 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.

Other issues 14.6%

COVID-19 6 MONTH EXTENSION · Windscreen damaged but not adversely affecting driver's view · Front Registration plate does not conform to the specified requirements

Brake wear 3%

Rear Brake pad(s) wearing thin

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

Data covers a 3-year window centred on 2018.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 2,341 Porsche 911 cars.

Before you buy a 2018 Porsche 911

Based on MOT data from 2,341 vehicles — here's what to check.

📋 Check the full MOT history. 9.4% 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 73,233 Porsche 911 vehicles registered in the UK — across all years. From DVLA registration records.

Black 23.1%

16,927

Silver 20.9%

15,301

Blue 17.1%

12,523

Grey 13.4%

9,848

Red 9.7%

7,099

White 9.2%

6,724

Green 2.4%

1,790

Yellow 1.8%

1,343

Orange 1%

697

Purple 0.6%

412

Brown 0.5%

392

Gold 0.2%

177

Mileage Distribution

Most 2018 Porsche 911 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.

13,678

typical

7,803

low mileage

20,564

high mileage

Half of all 2018 Porsche 911 vehicles fall between 7,803 and 20,564 miles.

Is the mileage you're seeing normal?

✓ Under 7,803 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.

✓ 7,803–20,564 miles — normal for age. This is where most 2018 Porsche 911s sit.

⚠ Over 27,761 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2018 Porsche 911 — Still on the Road

Almost all 2018 Porsche 911s are still on the road.

Strong survival — 2,029 vehicles still getting MOTs in 2025, 98% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2021–2025.

MOT History Averages

5.1

Avg MOT tests per vehicle

0.29

Avg failures per vehicle

1.6

Avg advisories per vehicle

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