Should I check the MOT history before buying a 2018 MG Zs?

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 MG Zs?

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 MG Zs?

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 MG Zs vehicles have had dangerous defects recorded?

23% 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 MG Zs reliable?

Based on MOT data from 5,001 vehicles, the 2018 MG Zs has a first-time MOT pass rate of 85.5%, 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 MG Zs?

The most frequently recorded MOT issues on the 2018 MG Zs are: Nearside Front Tyre worn close to legal limit/worn on edge (44.2% of vehicles), Offside Front Tyre worn close to legal limit/worn on edge (41.1% of vehicles), Rear Brake disc worn, pitted or scored, but not seriously weakened (32.5% 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 MG Zs?

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.

CarHunch

Get Started

MG Zs (2018)

5,001 real MOT outcomes analysed • 85.5% first-time pass rate

2018 MG Zs

CarHunch analysed 5,001 real MOT records for the 2018 MG Zs. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

On this page

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

The 2018 MG ZS passes its MOT first time at 85.5%, comfortably above the UK average of 80%, which is a solid result for this age of vehicle. However, nearly a quarter of these cars (23.3%) have recorded a dangerous defect at some point, which is a genuine concern for buyers and warrants a thorough pre-purchase inspection.

At just over 32,000 miles median mileage for a six-year-old car, these ZS examples are relatively well-used but not excessively so, suggesting moderate ownership patterns. The average of 1.02 failures per vehicle and 7.4 advisories indicates routine wear items rather than structural problems, so budget for preventative maintenance and minor fixes, but get a full independent inspection done before committing to purchase.

The 2018 MG Zs passes its MOT first time at roughly the UK average rate (85.5%) — 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

85.5%

UK average ~80%

Around average

Dangerous (ever)

23.3%

At least once in MOT history

Check this vehicle

Avg failures / car

1.02

Over 6 tests on record

High

Typical mileage

33k

Middle half: 23k–43k

For context

✅ Good baseline reliability. A 85.5% 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 7.4 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 5,001 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 5,001 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 44.2%

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

Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.

Brake wear 32.5%

Rear Brake disc worn, pitted or scored, but not seriously weakened · Offside Rear Brake disc worn, pitted or scored, but not seriously weakened · Front Brake disc worn, pitted or scored, but not seriously weakened · …

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

Other issues 14.6%

Nearside Rear Child Seat fitted not allowing full inspection of adult belt · Front Sub-frame corroded but not seriously weakened

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 5,001 MG Zs cars.

Before you buy a 2018 MG Zs

Based on MOT data from 5,001 vehicles — here's what to check.

📋 Check the full MOT history. 23.3% 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 (100%)	4,999	85.5%	1.02

Colour Breakdown

Based on 38,683 MG Zs vehicles registered in the UK — across all years. From DVLA registration records.

Blue 26.7%

10,339

Red 16.9%

6,551

Silver 13%

5,028

White 11.9%

4,615

Grey 11.6%

4,470

Black 10.4%

4,019

Green 5.1%

1,962

Orange 2.5%

951

Yellow 1.9%

737

Turquoise 0%

Purple 0%

Mileage Distribution

Most 2018 MG Zs 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.

32,666

typical

23,148

low mileage

43,135

high mileage

Half of all 2018 MG Zs vehicles fall between 23,148 and 43,135 miles.

Is the mileage you're seeing normal?

✓ Under 23,148 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.

✓ 23,148–43,135 miles — normal for age. This is where most 2018 MG Zss sit.

⚠ Over 58,232 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2018 MG Zs — Still on the Road

Almost all 2018 MG Zss are still on the road.

Strong survival — 4,846 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 2021–2025.

MOT History Averages

Avg MOT tests per vehicle

1.02

Avg failures per vehicle

7.4

Avg advisories per vehicle

Other model years — MG Zs: All Zs years → Which year to buy? →

2001 2002 2003 2004 2005 2006 2017 2019 2020

Or browse all models: MG →

Compare with another model

See how the 2018 MG Zs stacks up against a rival.

Average reliability — agree?