Suzuki Swift Mk4 (AZ) (2017-2023) reliability
Suzuki Swift Mk4 (AZ) built around 2018: about average at the MOT
Suzuki Swift Mk4 (AZ) models built around 2018 fail their MOT a little less often than similar cars the same age.
Looking at a Suzuki Swift Mk4 (AZ) right now?
Enter its number plate to see its full MOT history, risk rating and running costs.
Key figure
15% of MOT tests on Suzuki Swift Mk4 (AZ) models built around 2018 ended in a fail (retests included), against 18% for similar cars the same age.
Most common issue
The most common MOT issue on Suzuki Swift Mk4 (AZ) models built around 2018 involves the tyres.
Based on 54,417 tests of Swift models registered 2017-2023.
About 1 in 50 Swift Mk4 (AZ) MOTs (1.8%) failed and still hadn't passed 3 days later. That's for cars built around 2018 (7 years old), all fuels combined.
Based on 11,074 tests (DVSA MOT results, 2025). A fail that passed a retest within 3 days, even the same day, isn't counted. Nor is a fail with no later MOT on record.
About 1 in 30 Swift Mk4 (AZ) MOTs (3.5%) found at least one dangerous defect. These are cars built around 2018 (7 years old).
Based on 11,074 tests (DVSA MOT results, 2025). Dangerous is the most serious grade an MOT gives: a direct risk to road safety.
Mk4 (AZ) fail rate by age
Fail rate is the share of MOT tests that ended in a fail. Retests count as tests. How we count fail rates Build years are worked out from age, so they are approximate. Tests counted are 2025 MOTs. Highest fail rate at 8 years old.
How the Swift Mk4 (AZ) compares
At each age below, see how the Swift Mk4 (AZ) holds up against other cars the same age. The averages combine all fuel types.
Based on 43,996 tests across 7 Suzuki models, built around 2018 (7 years old).
Fail rate is the share of MOT tests that ended in a fail. Retests count as tests. How we count fail rates Build years are worked out from age, so they are approximate. Tests counted are 2025 MOTs.
What to check before viewing
The model's most common MOT issues, turned into things you can ask about or look for.
Brake pipes and hoses
High priorityLook under the car for corrosion or chafing on the rigid brake pipes near the rear axle.
Brake pads
High priorityAsk when the pads were last replaced and check the warning-light history.
Brake discs
High priorityAsk for the date and mileage of the last disc replacement; visually check for a deep wear lip and rust pitting on each disc.
Tyres
Worth checkingCheck tread depth across the full width on all four; uneven wear suggests alignment or suspension issues.
Vehicle-specific check
Worth checkingCheck the car’s number plate on MOT Wise to see its own MOT history and any recalls for its build years.
Other hatchbacks to compare
Other hatchbacks, with each one's figures taken at the same age as the Swift Mk4 (AZ).
- 1
Volkswagen up!
Same body type, tested at the same age
- Fail rate
- 14.2%
- Still registered at 10 years
- 96.7%
No clear edge over the Suzuki Swift Mk4 (AZ) on these figures.
2 critical recall campaigns matching this model/build period.
15,657 MOT tests on cars built around 2018
- 2
DS 3
Same body type, tested at the same age
- Fail rate
- 24.5%
- Still registered at 10 years
- 90.9%
No clear edge over the Suzuki Swift Mk4 (AZ) on these figures.
3 critical recall campaigns matching this model/build period.
6,861 MOT tests on cars built around 2018
- 3
Toyota Aygo
Same body type, tested at the same age
- Fail rate
- 13%
- Fail, no pass in 3 days
- 1.2%
- Dangerous
- 4.6%
- Still registered at 10 years
- 96%
Fewer fails still not passed 3 days later: 1.2%, against 1.8% for the Suzuki Swift Mk4 (AZ).
25,028 MOT tests on cars built around 2018
- 4
Citroen C4 Cactus
Same body type, tested at the same age
- Fail rate
- 23.7%
- Fail, no pass in 3 days
- 3.3%
- Dangerous
- 5.6%
No clear edge over the Suzuki Swift Mk4 (AZ) on these figures.
7,268 MOT tests on cars built around 2018
- Fail rate
- = the share of MOT tests that ended in a fail. Retests count as tests.
- Fail, no pass in 3 days
- = the share of MOT tests that failed and still hadn't passed 3 days later. A fail that passed a retest within 3 days, even the same day, isn't counted.
- Dangerous
- = the share of MOT tests where the tester marked a fault as dangerous. It is against the law to drive the car until it is fixed.
- Still registered at 10 years
- = the share of cars still registered (taxed or declared off the road) 10 years after they were first registered.
Recall context
20 recalls in all4 of the 20 Swift Mk4 (AZ) recalls cover cars built in these years.
- 4 recalls
Top concerns
- Some vehicles have an inappropriate design and material on check valve of vacuum pump
- Unintended activation of the side air bag curtain air bag and seat pre tensioner may occur when rear door is slammed shu
- Integrated starter generator belt belt may fail
For the exact car, check GOV.UK's recall checker with the number plate.
What has gone wrong on Swift Mk4 (AZ) cars built around 2018
The share of petrol cars that have ever failed an MOT on each part of the car. Based on 583 cars.
Fail rate by engine size, built around 2018 (7 years old)
Engine sizes across all petrol Swift tests (not specific to Mk4 (AZ)).
How Swift Mk4 (AZ) cars have aged
How Swift Mk4 (AZ) cars have aged
How fail rates have changed as these cars got older. Each line follows cars first registered in about the same year across several years of MOT data. Not a prediction for any one car.
Some lines cover only a year or two, so read this as a rough guide.
How each part holds up as Mk4 (AZ) cars age
How each part holds up as Mk4 (AZ) cars age
The share of petrol cars built 2017-2020 that have ever failed an MOT on each part of the car. Rates usually rise with age, but can dip slightly as cars leave the road.
| Part of the car | 5 years | 6 years | 7 years | 8 years |
|---|---|---|---|---|
| Suspension | No figure | 3% | 10% | 9% |
| Brakes | 4% | 7% | 10% | 16% |
| Emissions | No figure | 1% | 1% | 1% |
| Tyres | 3% | 11% | 15% | 18% |
| Lighting | 1% | 4% | 5% | 10% |
| Corrosion | 0% | 0% | 1% | 2% |
Based on petrol cars in the 2017-2020 build-year band, from 78 to 720 cars at each age.
Mk4 (AZ) variants compared
Swift Mk4 (AZ) variants built around 2018
The fail rate for each Swift Mk4 (AZ) variant, grouped by fuel. Each row counts fails per MOT test, the same way as the main fail rate chart.
Petrol
- SWIFT14.9%8,395 tests
Hybrid electric
- SWIFT14.1%2,672 tests
Most common issues on Suzuki Swifts of this age
This list covers every Suzuki Swift built around 2018, whichever generation it is. We don't have a defect list for the Mk4 (AZ) on its own.
Most common advisories and fails
In order of the share of MOT tests that recorded each one
- 117.2%Advisory
Tyre slightly damaged, cracking or perishing
- 213.1%Advisory
Tyre worn close to the legal limit or worn on the edge
- 37.9%Advisory
Brake pipe corroded or covered in grease
- 46.9%Advisory
Brake pads wearing thin
- 55.3%Advisory
Brake disc worn, pitted or scored, but not seriously weakened
Based on 11,074 tests
Looking at a Suzuki Swift Mk4 (AZ) right now?
Enter its number plate to see its full MOT history, risk rating and running costs.
Frequently asked questions
Built around 2018 (7 years old), the Suzuki Swift Mk4 (AZ) (2017-2023) fails MOTs at about the rate typical for this age. This is based on 11,074 7-year-old MOT tests from DVSA data. Each retest counts as a test.