Should I check the MOT history before buying a 2018 Sym Jet 4 125 E4?

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 Sym Jet 4 125 E4?

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 Sym Jet 4 125 E4?

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.

Do I need an HPI check when buying a 2018 Sym Jet 4 125 E4?

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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Sym Jet 4 125 E4 (2018)

214 real MOT outcomes analysed • 49.6% first-time pass rate

2018 Sym Jet 4 125 E4

CarHunch analysed 214 real MOT records for the 2018 Sym Jet 4 125 E4. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

Below average reliability 30.4% below UK average

49.6%

pass MOT first time

UK average: ~80%

10,347

typical mileage

6,342–16,391 middle half

16.4%

ever had a dangerous defect

recorded at any MOT

0.45

avg MOT failures per car

over 2.4 tests on record

What to check before buying a 2018 Sym Jet 4 125 E4

Practical pre-purchase checks for this age and model.

📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.

Before you buy a Sym Jet 4 125 E4

MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.

Inspection

Have a qualified mechanic check this car before you commit to buying →

CarHunch may earn a small commission if you buy via these links — at no extra cost to you.

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Petrol (100%)	213	49.3%	0.46
Other (0%)	1	100%	0

Mileage Distribution

Most 2018 Sym Jet 4 125 E4 vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.

6,342

low mileage

10,347

typical

16,391

high mileage

Half of all 2018 Sym Jet 4 125 E4 vehicles fall between 6,342 and 16,391 miles.

2018 Sym Jet 4 125 E4 — Still on the Road

Numbers are declining — 43 vehicles still getting MOTs in 2025 (46% of 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

2.4

Avg MOT tests per vehicle

0.45

Avg failures per vehicle

1.4

Avg advisories per vehicle

Found a specific Sym Jet 4 125 E4?

Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.

Other model years — Sym Jet 4 125 E4:

2017 2019 2020 2021