Skip advert
Advertisement

SEAT Leon (2012 - 2020) review - MPG, CO2 and Running Costs

Fuel-efficient engines are offered across the range. TDI diesels are the best but the TSI petrol line also impresses

MPG, CO2 and Running Costs rating

4.6

How we review cars
RRP
£24,805 £39,370
Avg. savings
£5,202 off RRP*
Find your SEAT Leon
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

All Leon engines are impressively fuel efficient considering their performance, although the official figures changed in 2019 to reflect the new WLTP test regime. While the figures in this test are poorer than before, they're far more achievable in the real world, so it doesn't really mean the Leon is any less efficient.

Advertisement - Article continues below

The 1.0 TSI opens the range with economy of 53.3mpg, closely followed by the 1.5 TSI 130 at 51.4mpg. The 150PS version manages a best of 49.6mpg, while adding the DSG auto knocks this back to 45.6mpg. The 2.0 TSI Cupra has a claimed economy of 38.7mpg.

The 1.6 TDI 115 averages up to 58.9mpg, which means there's a narrower gap between it and the smallest TSI petrol engine, so it's worth doing the sums to see if you'll be doing enough miles to justify the extra cost of the diesel over the petrol (around £1,200 between the 115PS models). Emissions for the 1.6 TDI are 125g/km, while the 1.0 TSI emits 120g/km of CO2.  

It's worth noting that changes in spec and wheel size will have an effect on these figures, so it's worth checking the specs closely if you want the most fuel efficient Leon possible.

SEAT Leon - dash

Insurance groups

The Leon has reasonable insurance groups; they’re not the lowest in this sector but do fairly reflect the extra turbo verve of the engine line-up. The 1.6 TDI diesel is in group 12, while the 1.0 TSI petrol has a group 13 rating. This rises to group 14 for the 1.5 TSI Evo 130, and group 19 for the 150 version. 

Predictably, the Cupra 290 hatch pitches in somewhat higher at group 32, while the Cupra 300 estate sits in group 35. 

Depreciation

Leon retained values are decent – it’s not the best model in its class for depreciation, but nearly every model still easily holds on to more than 40 per cent of the list price after three years.

Looking at past models, the five-door hatchback seems to retain marginally more than the now-discontinued SC three-door, and used Leon buyers reward the higher-tech and more mainstream engines. 

Skip advert
Advertisement

Which Is Best

Cheapest

  • Name
    1.5 TSI 115 SE 5dr [Driver Assistance Pack]
  • Gearbox type
    Manual
  • RRP
    £24,805
Select car

Most Economical

  • Name
    1.5 e-Hybrid FR 5dr DSG [Driver Assistance Pack]
  • Gearbox type
    Semi-auto
  • RRP
    £36,455
Select car

Fastest

  • Name
    1.5 e-Hybrid FR 5dr DSG [Driver Assistance Pack]
  • Gearbox type
    Semi-auto
  • RRP
    £36,455
Select car

New & used car deals

Seat Leon

Seat Leon

RRP £24,125Avg. savings £5,202 off RRP*Used from £8,995
Mazda 3

Mazda 3

RRP £22,065Avg. savings £2,429 off RRP*Used from £8,290
Cupra Formentor

Cupra Formentor

RRP £32,315Avg. savings £5,713 off RRP*Used from £16,197
Mazda Cx-30

Mazda Cx-30

RRP £23,265Avg. savings £2,501 off RRP*Used from £12,550
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Car finance firms losing "hundreds of millions” in EV depreciation want Govt support
Car and money

Car finance firms losing "hundreds of millions” in EV depreciation want Govt support

The BVRLA says the disparity in supply and demand for electric cars is resulting in weaker-than-expected residuals, which is costing firms millions
News
11 Apr 2025
New Aston Martin Vanquish 2025 review: a proper British bruiser
Aston Martin Vanquish - front tracking

New Aston Martin Vanquish 2025 review: a proper British bruiser

V12-powered cars are becoming rarer, but the Vanquish is one of the best you can buy
Road tests
11 Apr 2025
New Denza Z9GT 2025 review: super estate has BMW and Mercedes in its sights
 Denza Z9GT - front tracking

New Denza Z9GT 2025 review: super estate has BMW and Mercedes in its sights

The new Denza Z9GT hybrid estate is on the way to the UK. Should BMW, Mercedes and even Porsche be worried?
Road tests
11 Apr 2025