Should I check the MOT history before buying a 2018 Infiniti Q30?

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 Infiniti Q30?

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 Infiniti Q30?

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.

How many 2018 Infiniti Q30 vehicles have had dangerous defects recorded?

22% of these vehicles have had a dangerous defect recorded. Search the registration on CarHunch — the full MOT history will show exactly what was flagged and whether it was resolved.

Is the 2018 Infiniti Q30 reliable?

Based on MOT data from 307 vehicles, the 2018 Infiniti Q30 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 2018 Infiniti Q30?

The most frequently recorded MOT issues on the 2018 Infiniti Q30 are: Nearside Front Tyre worn close to legal limit/worn on edge (47.5% of vehicles), Offside Front Tyre worn close to legal limit/worn on edge (46.1% of vehicles), Offside Rear Tyre slightly damaged/cracking or perishing (42% 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 Infiniti Q30?

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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Infiniti Q30 (2018)

307 real MOT outcomes analysed • 91.5% first-time pass rate

2018 Infiniti Q30

CarHunch analysed 307 real MOT records for the 2018 Infiniti Q30. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

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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

Moderate sample. 307 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

The 2018 INFINITI Q30 is a reliable performer, passing its MOT first time in 91.5% of cases—a solid 11.5 percentage points above the UK average. However, nearly one in four of these cars (22.1%) have recorded a dangerous defect at some point, which is a legitimate concern for potential buyers and warrants a thorough pre-purchase inspection.

At just under 32,000 miles median, these cars are relatively low-mileage for their age, suggesting moderate use and a smaller pool of high-milers that might skew reliability concerns. The average of 0.58 failures per vehicle is reassuring, though advisories average 4.8 per car—mostly routine maintenance items—so budget for regular upkeep rather than unexpected structural problems.

The 2018 Infiniti Q30 passes its MOT first time at roughly the UK average rate (91.5%) — solid but worth checking this vehicle's history carefully.

⚠️ Over 1 in 5 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)

22.2%

At least once in MOT history

Check this vehicle

Avg failures / car

0.58

Over 5.7 tests on record

Moderate

Typical mileage

32k

Middle half: 25k–43k

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 4.8 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 307 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 307 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 47.5%

Nearside Front Tyre worn close to legal limit/worn on edge · Offside Front Tyre worn close to legal limit/worn on edge · Offside 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 23.5%

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

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

Other issues 18.9%

COVID-19 6 MONTH EXTENSION · Nearside Rear Child Seat fitted not allowing full inspection of adult belt

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 307 Infiniti Q30 cars.

Before you buy a 2018 Infiniti Q30

Based on MOT data from 307 vehicles — here's what to check.

📋 Check the full MOT history. 22.2% 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 (50%)	155	92.4%	0.5
Diesel (50%)	152	90.6%	0.66

Colour Breakdown

Based on 4,919 Infiniti Q30 vehicles registered in the UK — across all years. From DVLA registration records.

Black 45.6%

2,245

Grey 25.8%

1,269

White 11.8%

579

Silver 7.6%

375

Blue 3.9%

192

Red 2.5%

123

Bronze 2.5%

121

Brown 0.1%

Pink 0.1%

Purple 0.1%

Mileage Distribution

Most 2018 Infiniti Q30 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.

31,998

typical

24,770

low mileage

42,839

high mileage

Half of all 2018 Infiniti Q30 vehicles fall between 24,770 and 42,839 miles.

Is the mileage you're seeing normal?

✓ Under 24,770 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.

✓ 24,770–42,839 miles — normal for age. This is where most 2018 Infiniti Q30s sit.

⚠ Over 57,832 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2018 Infiniti Q30 — Still on the Road

Almost all 2018 Infiniti Q30s are still on the road.

Strong survival — 295 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 2020–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

5.7

Avg MOT tests per vehicle

0.58

Avg failures per vehicle

4.8

Avg advisories per vehicle

Other model years — Infiniti Q30: All Q30 years → Which year to buy? →

2016 2017 2019

Or browse all models: Infiniti →

Compare with another model

See how the 2018 Infiniti Q30 stacks up against a rival.

Average reliability — agree?