Skip advert
Advertisement
In-depth reviews

MG3 - MPG, emissions & running costs

The MG3 shouldn’t cost you much in terms of fuel and depreciation, but insurance is pricier than rivals

MPG, emissions and running costs rating

4.5

How we review cars
RRP
£16,495 £20,495
Find your MG MG3
Compare deals from trusted partners on this car and previous models.
Or are you looking to sell your car?
Value my car
Fast, no-nonsense car selling
Value my car

Despite offering class-leading performance, the MG3 hybrid's efficiency is very competitive. Its closest rivals, the Renault Clio and Toyota Yaris, achieved 56.2 and 58.5mpg, respectively, when they faced off in an Auto Express twin test. 

The MG3 can get very close to those figures, because we averaged 55.4mpg behind the wheel. It’s at its best around town and in 30/40mph limits, where the electric motor can work at its most efficient, and it means over 60mpg is possible. At motorway speeds, where the petrol engine is doing more work, it drops down to just over 50mpg, but that’s still a strong return overall.

Advertisement - Article continues below

Both SE and Trophy trims of the hybrid MG3 put out 100g/km, which is significantly lower than a traditional petrol-powered supermini. It’s not quite as low as the sub-100 g/km figures produced by either the Clio E-Tech or Yaris hybrid, which means those two have slightly lower Benefit-in-Kind (BIK) company car tax rates. None will match a full EV like the Peugeot E-208 or Vauxhall Corsa Electric for company car tax.

The MG3 hybrid is several insurance groups higher than its competitors, which will likely lead to pricier premiums. The entry-level SE is in group 23, while the top-of-the-range Trophy is in 24. For comparison, the Clio E-Tech is in group 15.

Data provided by vehicle valuation experts CDL indicates that the MG3 will retain almost half of its original value after three years or 36,000 miles. The Clio E-Tech hybrid is expected to retain slightly more – between 51 and 53.5 per cent, depending on trim level – but it also starts from around £4,500 more than the MG3 in SE trim.

Model MPGCO2Insurance group
MG3 Hybrid+ SE64.2mpg100g/km23
MG3 Hybrid+ Trophy64.2mpg100g/km24
Skip advert
Advertisement

New & used car deals

Audi A3

Audi A3

RRP £26,075Avg. savings £1,664 off RRP*Used from £14,990
Kia Sportage

Kia Sportage

RRP £27,795Avg. savings £2,400 off RRP*Used from £18,203
Dacia Spring

Dacia Spring

RRP £14,995Avg. savings £1,676 off RRP*
Volkswagen Polo

Volkswagen Polo

RRP £15,155Avg. savings £1,844 off RRP*Used from £8,199
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Have you considered?

MG3 Hybrid+ long-term test: sluggish gearbox causes frustration
MG3 Hybrid+ long-term test - front 3/4 with Ellis playing three-card monty

MG3 Hybrid+ long-term test: sluggish gearbox causes frustration

Long-term tests
14 Feb 2025
Vauxhall Corsa Electric review
Vauxhall Corsa Electric main image

Vauxhall Corsa Electric review

In-depth reviews
28 Nov 2024

Most Popular

New Renault Clio to shun electric power and stick with petrol and hybrid options
Renault Clio design render - front

New Renault Clio to shun electric power and stick with petrol and hybrid options

Renault’s sixth-generation Clio hatchback will get a clean look and hi-tech kit, and our exclusive images show what it could look like
News
12 Feb 2025
The small petrol car lives! Pint-sized Fiat Pandina due in 2027
Fiat Panda Cross - front static

The small petrol car lives! Pint-sized Fiat Pandina due in 2027

Fiat will build a new city-sized Pandina based on the new 500 platform, bringing a proper, petrol powered A-segment city car to market as early as 202…
News
12 Feb 2025
Car Deal of the Day: retro Renault 5 for £232 per month, plus four years to enjoy it
Renault 5 - front cornering

Car Deal of the Day: retro Renault 5 for £232 per month, plus four years to enjoy it

The reborn Renault 5 is one of the most feverishly anticipated cars in a long time, and at such a low price, our Deal of the Day for 8 February is a p…
News
8 Feb 2025