Car
Citroen C1
80.3%
pass rate across 585,817 tests
76.1% first-time pass rate
Citroen C1 vs Toyota Aygo
The two cars compared on 1,458,544 real MOT tests: pass rates, first-time passes, the failures each is known for, repair costs and how both have moved year by year.
Car
Toyota Aygo
84.0%
pass rate across 872,727 tests
81.3% first-time pass rate
The short answer
Toyota Aygo has the stronger MOT record
Across 1,458,544 tests, the Toyota Aygo has the stronger first-time record: 81.3% against 76.1%, a 5.2-point gap. On all MOTs the Toyota Aygo is ahead at 84.0% versus 80.3%. Even after adjusting for the age and mileage of the cars tested, the Toyota Aygo is +2.5 points against its expected rate, the Citroen C1 +1.1. A typical repair bill is similar: £33–£88 for the Citroen C1 and £32–£82 for the Toyota Aygo; at their pass rates that is roughly £647–£1,742 versus £507–£1,310 per 100 tests.
- First-time pass: 76.1% vs 81.3%.
- All MOTs: 80.3% vs 84.0%.
- Like-for-like: +1.1 vs +2.5 points.
- Typical repair bill: £33–£88 vs £32–£82.
- At 90,000–120,000 miles: 71.3% vs 72.0%.
| Measure | C1 | Aygo |
|---|---|---|
| MOT tests on record | 585,817 | 872,727 |
| Pass rate, all MOTs | 80.3% | 84.0% stronger figure |
| First-time pass rate | 76.1% | 81.3% stronger figure |
| Against the UK average | −0.7 pts | +3.0 pts stronger figure |
| Like-for-like, age and mileage adjusted | +1.1 pts | +2.5 pts stronger figure |
| Average mileage at test | 58,249 mi | 57,142 mi |
| Model years on record | 2005–2022 (18) | 2005–2022 (18) |
| Best model year | 2021 · 93.9% | 2022 · 95.2% |
| Worst model year | 2006 · 70.1% | 2005 · 68.3% |
| Typical repair bill | £33–£88 | £32–£82 stronger figure |
| Expected repair spend per 100 tests | £647–£1,742 | £507–£1,310 stronger figure |
| Main fuel | Petrol 99% | Petrol 100% |
| Variants recorded | 1 | 2 |
A ✓ marks the stronger figure in each row. It is a comparison between the two cars, not a judgement against the national average.
What goes wrong most often
The most common priced failures on each model, as a share of all its tests. Repair costs are estimates from UK parts data, not quotes.
C1
- Rigid brake pipes excessively corroded 15.2% £80–£180
- Linkage pin or bush excessively worn 9.0% £40–£150
- Service brake binding 6.8% £60–£150
- Sub-frame corroded 5.3% £180–£450
Aygo
- Linkage pin or bush excessively worn 7.9% £40–£150
- Service brake binding 5.4% £60–£150
- Component mounting: prescribed area excessively corroded 2.9% £180–£450
- Wheel badly distorted 2.3% £20–£55
Year by year
The newest 8 years with published results. A model's headline rate hides a wide spread between its best and worst years.
| Model year | C1 | Aygo |
|---|---|---|
| 2015 | 84.7% · 61,015 tests | 87.3% · 77,136 tests |
| 2016 | 85.5% · 61,454 tests | 89.1% · 72,368 tests |
| 2017 | 87.4% · 30,133 tests | 89.8% · 69,189 tests |
| 2018 | 89.9% · 22,822 tests | 91.1% · 69,937 tests |
| 2019 | 91.6% · 15,763 tests | 92.5% · 69,104 tests |
| 2020 | 92.4% · 10,249 tests | 93.6% · 50,276 tests |
| 2021 | 93.9% · 6,987 tests | 94.0% · 34,085 tests |
| 2022 | 93.9% · 375 tests | 95.2% · 1,845 tests |
Does the pass rate hold at higher mileage?
Pass rate by the mileage recorded at test, pooled across every published year. A car that stays strong past 90,000 miles is doing something right.
| Mileage | C1 | Aygo |
|---|---|---|
| 0–30,000 mi | 91.0% · 92,285 tests | 93.0% · 238,224 tests |
| 30,000–60,000 mi | 84.2% · 201,605 tests | 86.4% · 302,111 tests |
| 60,000–90,000 mi | 76.7% · 173,046 tests | 78.0% · 202,327 tests |
| 90,000–120,000 mi | 71.3% · 86,476 tests | 72.0% · 93,640 tests |
| 120k+ | 68.4% · 32,213 tests | 69.2% · 36,212 tests |
What to check before you buy
Citroen C1
- Rigid brake pipes excessively corroded — 15.2% of tests, £80–£180 to put right.
- Linkage pin or bush excessively worn — 9.0% of tests, £40–£150 to put right.
- The weakest year on record is 2006 at 70.1%; check that generation's MOT history closely.
Toyota Aygo
- Linkage pin or bush excessively worn — 7.9% of tests, £40–£150 to put right.
- Service brake binding — 5.4% of tests, £60–£150 to put right.
- The weakest year on record is 2005 at 68.3%; check that generation's MOT history closely.
Both columns cover every published year for the model. Pass rates are test-weighted, so a model with more recent tests is not dragged down by its oldest ones. Repair figures are estimates from UK parts data; a garage quote is the only number that matters for a specific car. The same car can be tested in more than one year, so these are test outcomes, not a count of individual vehicles.
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