2020 Sym Jet 4 125 E4 MOT Pass Rate
Pass rate for Jet 4 125 E4 models manufactured in 2020, based on 183 real MOT test results.
Data from official DVSA MOT testing records
This page shows all Jet 4 125 E4 cars tested in 2020. Want to see how cars built in 2020 hold up over time?
View 2020 Sym Jet 4 125 E4 vintage page → (83.0% current pass rate)2020 Sym Jet 4 125 E4 MOT Analysis
The 2020 Sym Jet 4 125 E4 has an MOT pass rate of 77.0% based on 183 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 10,453 miles on the odometer. With a 23.0% failure rate, the 2020 Jet 4 125 E4 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2020 Sym Jet 4 125 E4 is Motorcycle brakes, responsible for 6.6% of failures. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs range from £150–400. Motorcycle lamps and reflectors is the second most common issue at 4.4%. Motorcycle suspension follows at 4.4%.
Top failures specific to 2020 models only. The overall Jet 4 125 E4 page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Motorcycle Brakes | 6.6% | 12 |
| 2 | Motorcycle Lamps And Reflectors | 4.4% | 8 |
| 3 | Motorcycle Suspension | 4.4% | 8 |
| 4 | Motorcycle Tyres | 2.7% | 5 |
| 5 | Motorcycle Structure And Attachments | 1.1% | 2 |
| 6 | Motorcycle Wheels | 0.5% | 1 |
| 7 | Motorcycle Audible Warning (Horn) | 0.5% | 1 |
| 8 | Motorcycle Steering | 0.5% | 1 |
Failures per 10,000 Miles
avg. 10,453 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Motorcycle brakes | 6.27 | 6.6% | 12 |
| Motorcycle lamps and reflectors | 4.18 | 4.4% | 8 |
| Motorcycle suspension | 4.18 | 4.4% | 8 |
| Motorcycle tyres | 2.61 | 2.7% | 5 |
| Motorcycle structure and attachments | 1.05 | 1.1% | 2 |
| Motorcycle wheels | 0.52 | 0.5% | 1 |
| Motorcycle audible warning (Horn) | 0.52 | 0.5% | 1 |
| Motorcycle steering | 0.52 | 0.5% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2020 Sym Jet 4 125 E4 has an MOT pass rate of 77.0% based on 183 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 10,453 miles on the odometer. With a 23.0% failure rate, the 2020 Jet 4 125 E4 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2020 Sym Jet 4 125 E4, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle brakes: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm). With relatively low average mileage of 10,453 miles, many of these vehicles are still in good mechanical condition.
Motorcycle brakes — 6.6% of failures
Motorcycle brakes issues account for 6.6% of MOT failures on 2020 Sym Jet 4 125 E4 models. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Motorcycle lamps and reflectors — 4.4% of failures
Motorcycle lamps and reflectors issues account for 4.4% of MOT failures on 2020 Sym Jet 4 125 E4 models. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Motorcycle suspension — 4.4% of failures
Motorcycle suspension issues account for 4.4% of MOT failures on 2020 Sym Jet 4 125 E4 models. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.