Hybrid and petrol · 2014–2026
MG 3
MPG, running costs and specs for the MG 3. By the official figures, the 2026 gets 66 mpg, about £845 a year in the UK.
- MPG
- 66 mpg
- 2026 official · 4.3 L/100km
- A year's petrol
- £845
- at today's prices in the UK
- On a full tank
- 650 miles
- 45 L tank
- Seats
- 5
What a 3 costs to run
At today's average petrol prices, by its official fuel use, the UK first.
| Country | Average price today | Cost to drive | A typical year |
|---|---|---|---|
| United Kingdom | £1.74/L petrol | £12.07 per 100 miles | £845 |
| New Zealand | $2.94/L petrol | $12.64 per 100 km | $1,391 |
| Australia | $2.41/L petrol | $10.38 per 100 km | $1,152 |
| United States | $4.35/gal petrol | $7.96 per 100 miles | $1,074 |
A typical year: New Zealand 11,000 km (Ministry of Transport's average for a light vehicle); Australia 11,100 km (ABS Survey of Motor Vehicle Use average); United Kingdom 11,265 km (DfT National Travel Survey average of about 7,000 miles); United States 21,726 km (FHWA average of about 13,500 miles). Real costs depend on how and where you drive. Work out a particular trip.
Where the 3 ranks
MG3 (2nd generation), 2018–2024
Specs for the 1.5 Core; other versions differ a little.
About
- Body
- Hatchback
- Size class
- City
- Generation
- MG3 (2nd generation)
- Built
- 2018-2024
- Seats
- 5
- Doors
- 5
- Drive
- FWD
Size and weight
- Length
- 4,113 mm
- Width
- 1,729 mm
- Height
- 1,503 mm
- Wheelbase
- 2,570 mm
Engine
- Engine
- 1.5 L 4-cylinder petrol
- Engine size
- 1,498 cc
- Cylinders
- 4
- Aspiration
- Naturally aspirated
- Power
- 82 kW
- Torque
- 150 Nm
- Gearbox
- 4-speed automatic
Economy
- Fuel tank
- 45 L
- Minimum petrol
- 91 RON
Official figures by year
From the US EPA, the UK's DfT and NZTA, newest first.
| Year | Fuel | Uses | UK | US | Range |
|---|---|---|---|---|---|
| 2026 | Petrol | 6.4 L/100km | 44 mpg | 37 mpg | — |
| 2026 | Hybrid | 4.3 L/100km | 66 mpg | 55 mpg | — |
| 2025 | Petrol | 6.4 L/100km | 44 mpg | 37 mpg | — |
| 2025 | Hybrid | 4.3 L/100km | 66 mpg | 55 mpg | — |
| 2024 | Hybrid | 4.3 L/100km | 66 mpg | 55 mpg | — |
| 2024 | Petrol | 6.5 L/100km | 43 mpg | 36 mpg | — |
| 2023 | Petrol | 6.7 L/100km | 42 mpg | 35 mpg | — |
| 2022 | Petrol | 6.7 L/100km | 42 mpg | 35 mpg | — |
| 2021 | Petrol | 6.7 L/100km | 42 mpg | 35 mpg | — |
| 2020 | Petrol | 6.7 L/100km | 42 mpg | 35 mpg | — |
| 2019 | Petrol | 6.6 L/100km | 43 mpg | 35 mpg | — |
| 2016 | Petrol | 5.8 L/100km | 49 mpg | 41 mpg | — |
| 2015 | Petrol | 5.8 L/100km | 49 mpg | 41 mpg | — |
| 2014 | Petrol | 5.8 L/100km | 49 mpg | 41 mpg | — |
MG 3 questions
What MPG does the MG 3 get?
The 2026 MG 3 gets 66 mpg in UK gallons by its official figures (4.3 L/100km). Each year's figures are listed below.
How much does a MG 3 cost to run a year in the UK?
About £845 a year at today's average petrol price of £1.74/L and a typical year's driving in the UK.
How far does a MG 3 go on a full tank?
About 650 miles (1,047 km) from its 45 L tank at its official fuel use.
Cars like the 3
From other makes, closest in what they use.
More from MG
Every MG
What will a drive in your 3 cost?
Roadtrip works out the fuel or charging cost of any drive for your exact car, finds the cheapest stations on the way, and splits it between everyone in the car.
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