MG 3

49,655 on UK roads in 2025+11,379 vs 2024

On the road

49,655

49,655 licensed

Change vs 2024

+29.7%

+11,379 cars

New in 2025

13,183

first-time registrations

Electrified

32.2%

hybrid, plug-in & battery

The MG 3 has a steady presence on UK roads, with 49,655 licensed in 2025 - up 29.7% on 2024. 13,183 were registered new in 2025. The fleet is overwhelmingly petrol (68%), with most in the 1.0-1.6L class. Most date from the 2020-2025 era.

How many are left?

Licensed MG 3 cars on the road over time

New registrations

First-time registrations per year

What the typical MG 3 looks like

Fuel, engine size and age across every MG 3 on the road today.

Fuel mix

Current split

49,655total

Petrol67.8%
Hybrid32.2%
Other0.0%

Engine size

Cars on the road by engine capacity

1.0-1.6L49,655

How old are they?

Share of cars by the year they were first registered

2010-20143%
2015-201928%
2020-202569%

MOT & reliability

2025 MOT data

How a MG 3 holds up at its MOT and how it's driven - from 23,470 tests, tracked across 2022-2025.

First-time pass rate

Average for its class

78.5%

23,470 MOT tests in 2025 · 19,649 first-time

Pass rate over time

2022

84.9%

2023

82.9%

2024

80.4%

2025

78.5%

▼ 6.4 pts since 2022

Pass rate by age

First-time pass rate by the car's age (tested in 2025)

How a MG 3 is driven

tracked across 2022-25

How much it's driven

miles a year, from 18,529 cars tracked across years

5,937miles a year · average use

46.5%

low · <5k

51.1%

avg · 5-15k

2.4%

high · 15k+

Most cover 3,298-7,813 miles a year (median 5,302).

Miles driven by age

Yearly mileage as the car ages

Driven most when newer, easing as it gets older.

Mileage & condition

Typical mileage at test

Odometer when tested (2025)

42,959

16,570middle 50%: 25,529-56,34774,536

Typical odometer rising: 30,745 → 34,536 → 39,084 → 42,959

Holds up by mileage

Pass rate as the odometer climbs

Under 40k

85%

40-80k

72.8%

80-120k

65.1%

120k+

59.2%

Petrol vs diesel

First-time pass rate by fuel

Petrol

19,647 tests

78.5%

A 2025 MG 3 passes first time 78.5% of the time - above the 77.6% UK average, and easing slightly year on year. The typical one is driven about 5,937 miles a year, and reliability is mostly about miles: 85% of low-mileage cars pass versus 59.2% past 120k.

Why a 3 fails its MOT

2025 MOT data

Of 4,225 first-time fails, here's what gets flagged most. Most cars fail on more than one item, so shares add up past 100%.

Where a 3 fails

Share of failed tests, by area

Tyres32.9%

Brakes30.4%

Suspension27.1%

Lamps & electrical21.4%

Visibility16.2%

Seat belts9.8%

Steering6.5%

Exhaust & emissions5.3%

Top specific defects

Exact items most often recorded as the reason a car failed

A tyre seriously damaged477

A suspension pin, bush or joint excessively worn420

Wiper blade missing or obviously not clearing the windscreen394

A tyre cords visible or damaged394

Parking brake efficiency below minimum requirement389

Tyre tread depth not in accordance with the requirements386

A spring or spring component fractured or seriously weakened379

An SRS malfunction indicator lamp (MIL) indicates a system malfunction357

A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED295

Windscreen washers not working or not providing sufficient fluid to clear the windscreen293

32.4% flagged dangerous·2.1 defects per fail·4,225 fails analysed

MG 3 - frequently asked

How many MG 3 are left in the UK?

There are 49,655 MG 3 cars still licensed on UK roads in 2025, up 29.7% on 2024.

How many new MG 3 were registered in 2025?

13,183 brand-new MG 3 cars were first registered in 2025.

What fuel does the typical MG 3 use?

Most are petrol - about 68% of all MG 3 on the road, with the majority in the 1.0-1.6L engine class. In total, 32.2% are electrified (hybrid, plug-in or battery).

How old is the typical MG 3?

Most MG 3 cars on the road today date from the 2020-2025 era.

How reliable is the MG 3?

78.5% of MG 3 cars pass their MOT first time, compared with a UK average of 77.6% across all cars. The typical tested MG 3 has around 39,243 miles on the clock.

Buying a MG 3?

Before you buy a specific MG 3, run its registration through AnalyzeMyCar for MOT history, mileage checks, service history and valuation.

Check a car

What the typical MG 3 looks like

Fuel, engine size and age across every MG 3 on the road today.

Fuel mix

Current split

49,655total

Petrol67.8%
Hybrid32.2%
Other0.0%

Engine size

Cars on the road by engine capacity

1.0-1.6L49,655

How old are they?

Share of cars by the year they were first registered

2010-20143%
2015-201928%
2020-202569%

MOT & reliability

2025 MOT data

How a MG 3 holds up at its MOT and how it's driven - from 23,470 tests, tracked across 2022-2025.

First-time pass rate

Average for its class

78.5%

23,470 MOT tests in 2025 · 19,649 first-time

Pass rate over time

2022

84.9%

2023

82.9%

2024

80.4%

2025

78.5%

▼ 6.4 pts since 2022

Pass rate by age

First-time pass rate by the car's age (tested in 2025)

How a MG 3 is driven

tracked across 2022-25

How much it's driven

miles a year, from 18,529 cars tracked across years

5,937miles a year · average use

46.5%

low · <5k

51.1%

avg · 5-15k

2.4%

high · 15k+

Most cover 3,298-7,813 miles a year (median 5,302).

Miles driven by age

Yearly mileage as the car ages

Driven most when newer, easing as it gets older.

Mileage & condition

Typical mileage at test

Odometer when tested (2025)

42,959

16,570middle 50%: 25,529-56,34774,536

Typical odometer rising: 30,745 → 34,536 → 39,084 → 42,959

Holds up by mileage

Pass rate as the odometer climbs

Under 40k

85%

40-80k

72.8%

80-120k

65.1%

120k+

59.2%

Petrol vs diesel

First-time pass rate by fuel

Petrol

19,647 tests

78.5%

Why a 3 fails its MOT

2025 MOT data

Of 4,225 first-time fails, here's what gets flagged most. Most cars fail on more than one item, so shares add up past 100%.

Where a 3 fails

Share of failed tests, by area

Tyres32.9%

Brakes30.4%

Suspension27.1%

Lamps & electrical21.4%

Visibility16.2%

Seat belts9.8%

Steering6.5%

Exhaust & emissions5.3%

Top specific defects

Exact items most often recorded as the reason a car failed

A tyre seriously damaged477

A suspension pin, bush or joint excessively worn420

Wiper blade missing or obviously not clearing the windscreen394

A tyre cords visible or damaged394

Parking brake efficiency below minimum requirement389

Tyre tread depth not in accordance with the requirements386

A spring or spring component fractured or seriously weakened379

An SRS malfunction indicator lamp (MIL) indicates a system malfunction357

A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED295

Windscreen washers not working or not providing sufficient fluid to clear the windscreen293

32.4% flagged dangerous·2.1 defects per fail·4,225 fails analysed

MG 3 - frequently asked

How many MG 3 are left in the UK?

There are 49,655 MG 3 cars still licensed on UK roads in 2025, up 29.7% on 2024.

How many new MG 3 were registered in 2025?

13,183 brand-new MG 3 cars were first registered in 2025.

What fuel does the typical MG 3 use?

Most are petrol - about 68% of all MG 3 on the road, with the majority in the 1.0-1.6L engine class. In total, 32.2% are electrified (hybrid, plug-in or battery).

How old is the typical MG 3?

Most MG 3 cars on the road today date from the 2020-2025 era.

How reliable is the MG 3?

78.5% of MG 3 cars pass their MOT first time, compared with a UK average of 77.6% across all cars. The typical tested MG 3 has around 39,243 miles on the clock.

Buying a MG 3?

Before you buy a specific MG 3, run its registration through AnalyzeMyCar for MOT history, mileage checks, service history and valuation.

Check a car