2020 Suzuki Swift Sz-L Dualjet Mhev — MOT failures & pass rate
Across 563 MOT tests analysed for the 2020 Suzuki Swift Sz-L Dualjet Mhev, the most common recorded failure areas were visibility, tyres and brakes. Its pass rate of 94.3% was above the average for cars of a similar age (90.5%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Visibility | 3.2% | 18 |
| 2 | Tyres | 3.0% | 17 |
| 3 | Brakes | 2.3% | 13 |
| 4 | Lighting & signalling | 0.5% | 3 |
| 5 | Emissions & environmental | 0.2% | 1 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 20 |
| 2 | Brake pads | 5 |
| 3 | Tyre pressure monitoring system | 5 |
| 4 | Tread depth | 4 |
| 5 | Brake discs | 3 |
| 6 | Hand lever | 3 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 17.1% | 96 |
| 2 | Brakes | 12.4% | 70 |
| 3 | Visibility | 3.7% | 21 |
| 4 | Other defects | 3.4% | 19 |
| 5 | Suspension | 1.2% | 7 |
| 6 | Lighting & signalling | 0.7% | 4 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 359 | 4.5% |
| 30-60k | 182 | 7.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2023 | 171 | 2.9% |
| 2024 | 192 | 6.3% |
| 2025 | 199 | 7.5% |
What to check before buying a 2020 Swift Sz-L Dualjet Mhev
Before buying a 2020 Suzuki Swift Sz-L Dualjet Mhev, focus on the areas it most often fails on. Visibility accounted for 3.2% of tests for this year.
- Visibility (3.2% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£150.
- Tyres (3.0% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
- Brakes (2.3% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2020 Suzuki Swift Sz-L Dualjet Mhevs pass their MOT?
94.3% of the 563 2020 Suzuki Swift Sz-L Dualjet Mhev MOT tests in this dataset passed — a 5.7% fail rate.
What is the most common MOT failure on a 2020 Suzuki Swift Sz-L Dualjet Mhev?
Visibility, recorded in 3.2% of tests, followed by tyres (3.0%).
Does the 2020 Swift Sz-L Dualjet Mhev get worse with mileage?
Its MOT fail rate rises from 4.5% in the 0-30k band to 7.7% in the 30-60k band.
Methodology & source. Based on 563 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.