MG 3
Registered from 2013 to 2021.

About this model
The MG3 is a supermini car produced by the Chinese automotive company SAIC under the British MG marque. The first generation, marketed as the MG3 SW, is based on the British-made Rover Streetwise, which itself was based on the Rover 25, while since the second generation, introduced in 2011 is marketed simply as the MG3.
From the Wikipedia article MG3 (automobile), licensed under CC BY-SA 4.0.
What fails its inspection
Great Britain's MOT record for the 2019 1.5 petrol. 419 of 4,070 tests failed, 10%.
Better than 34% of 2019 cars. The typical one fails 9%, across 908 models with enough tests behind them to say.
| Where | Share of failures | Failed tests |
|---|---|---|
| Tyres and wheels | 58% | 243 |
| Brakes | 23% | 98 |
| Lights and electrics | 19% | 80 |
| Visibility | 9% | 37 |
| Suspension | 7% | 31 |
| Exhaust and emissions | 4% | 15 |
The defects inspectors cite
- A tyre seriously damaged
- A tyre cords visible or damaged
- Tyre tread depth not in accordance with the requirements
- Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
- A tyre pressure monitoring system malfunctioning or obviously inoperative
- A brake lining or pad worn below 1.5mm
Before you buy one
Built from what this car fails on, not from general knowledge of the model.
- Tyres and wheels — 58% of its failures
- A tyre seriously damaged
- A tyre cords visible or damaged
- Tyre tread depth not in accordance with the requirements
- Brakes — 23% of its failures
- A brake lining or pad worn below 1.5mm
- Parking brake efficiency below minimum requirement
- Suspension — 7% of its failures
- Lights and electrics — 19% of its failures
- Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
- A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED
- Visibility — 9% of its failures
When it starts failing
At 60–80k miles this one fails 23% of its inspections, against the 14% an ordinary car of the same age fails.
| Odometer | Failure rate | Rate | Its age | Tests |
|---|---|---|---|---|
| 0–20k miles | 7% | 5% | 1,882 | |
| 20–40k miles | 12% | 9% | 1,843 | |
| 40–60k miles | 18% | 12% | 282 | |
| 60–80k miles | 23% | 14% | 44 |
4,051 British inspections, grouped by the odometer reading recorded at the test.
Half of these have more than 20k miles on them. That is how far people drive this car, not how long it lasts.
Specification
| Year | Measured |
|---|---|
| 2020 | 1.5 petrol · 105 hp · 1275 kg · 2520 mm wheelbase · 6.4 L/100km (WLTP) |
| 2019 | 1.5 petrol · 1275 kg · 2520 mm wheelbase · 6.4 L/100km (WLTP) |
| 2018 | 1.5 petrol · 1240 kg · 2520 mm wheelbase · 5.2 L/100km (NEDC) |