Skip advert
Advertisement

Peugeot 308 (2013-2021) review - MPG, CO2 and Running Costs

Petrol and diesel versions of the 308 deliver excellent economy, low emissions and affordable running costs

Find your Peugeot 308
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

Excellent fuel economy and low emissions make the Peugeot 308 one of the stars of the family hatchback market. No engine has emissions greater than 150g/km, and the diesel versions stand out most. The 1.5 BlueHDi 130 carries on where the older 1.6-litre diesels left off in terms of efficiency.

Advertisement - Article continues below

The BlueHDi 100 has emissions of 98g/km and claimed economy of 76.3mpg under the latest WLTP test regime, but it's not the most efficient engine available. That accolade goes to the more powerful BlueHDi 130 engine, which in Active trim with smaller wheels manages 80.7mpg and 93g/km of CO2. Adding the EAT8 auto doesn't harm the figures too badly, either, with claimed economy of 78.5mpg and 94g/km emissions. These figures aren't as good as the older 1.6 BlueHDi models could manage, but that's because they are tested under different conditions, and real-world MPG will be similar to before.

The 2.0-litre BlueHDi 180 with auto box has claimed economy of 64.2mpg, plus emissions of 116g/km, which is still pretty healthy for a powerful diesel.

The petrol engines are pretty impressive, too. The PureTech 110 manages up to 57.6mpg, while emissions are as low as 113g/km. Go for the 130 version, and 56.5mpg is achievable, and emissions rise only slightly to 116g/km.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

308

2020 Peugeot

308

17,979 milesManualPetrol1.2L

Cash £9,797
View 308
308

2021 Peugeot

308

62,954 milesManualPetrol1.2L

Cash £7,749
View 308
308

2023 Peugeot

308

36,540 milesAutomaticPetrol1.2L

Cash £13,997
View 308
308

2016 Peugeot

308

69,875 milesManualPetrol1.6L

Cash £6,395
View 308

Even the higher-performance 1.6 PureTech delivers strong efficiency. The PureTech 225 has a claimed average of 49.6mpg and emits a fleet-friendly 132g/km of CO2, while the 308 GTi claims a highly un-hot hatch-like 43.5mpg and 148g/km emissions.

Insurance groups

There’s a broad line-up of 308 models, and a wide range of insurance groups as a result. They start at group 15 for the entry-level PureTech 110 in Active trim. PureTech 130 versions start at insurance group 19.

Advertisement - Article continues below

For petrol engines, there’s then a big jump to the 1.6-litre PureTech, reflecting its much stronger performance. The PureTech 225 is in group 27 and the GTi sits in group 36.

Diesel versions will have steeper premiums than their petrol equivalents, perhaps because insurers feel their higher-mileage drivers pose a greater risk. The BlueHDi 100 kicks things off in group 18, with the high-powered BlueHDi 130 starting at group 21. The BlueHDi 180 EAT8 GT weighs in at group 29, which is high for a diesel.

Depreciation

Unlike some older Peugeots, the 308 holds on to its value reasonably well, although some hatchback rivals are better in this regard. On average, it retains around 39 per cent of its new list price after three years, and there’s not much difference between petrol and diesel variants, which reflects the enhanced appeal of the PureTech engines over earlier, older versions.

The star of the range is the GTi, with a retained value of over 45 per cent. But even the 1.5 BlueHDi 130 Active is predicted to hold on to over 40 per cent of its showroom price; moving up the range sees the retained value drop, so don’t get carried away if you want to maximise your return come resale time.

Skip advert
Advertisement

Which Is Best

Cheapest

  • Name
    1.2 Hybrid 145 Allure 5dr e-DSC6
  • Gearbox type
    Semi-auto
  • RRP
    £29,790
Select car

Most Economical

  • Name
    1.6 Plug-in Hybrid 195 Allure 5dr e-DSC7
  • Gearbox type
    Semi-auto
  • RRP
    £34,985
Select car

Fastest

  • Name
    1.6 Plug-in Hybrid 195 Allure 5dr e-DSC7
  • Gearbox type
    Semi-auto
  • RRP
    £34,985
Select car
Senior test editor

Dean has been part of the Auto Express team for more than 20 years, and has worked across nearly all departments, starting on magazine production, then moving to road tests and reviews. He's our resident van expert, but covers everything from scooters and motorbikes to supercars and consumer products.

New & used car deals

Peugeot 308

Peugeot 308

RRP £18,585Used from £13,295
Peugeot 208

Peugeot 208

RRP £17,520Avg. savings £5,297 off RRP*Used from £8,490
Toyota Yaris Cross
Nissan Juke

Nissan Juke

RRP £19,785Avg. savings £6,762 off RRP*Used from £9,574
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Geely Galaxy Battleship 700 is an AI-powered behemoth aiming to sink the Land Rover Defender
New Geely Galaxy Battleship - front static

New Geely Galaxy Battleship 700 is an AI-powered behemoth aiming to sink the Land Rover Defender

Auto Express has confirmed the hulking hybrid 4x4 is coming to the UK
News
25 Mar 2026
Car Deal of the Day: hot Volkswagen Golf R Estate offers pace and space for £301 a month
VW Golf R Estate - front cornering

Car Deal of the Day: hot Volkswagen Golf R Estate offers pace and space for £301 a month

High performance doesn’t normally come this cheap – the Volkswagen Golf R Estate is our Deal of the Day for 25 March.
News
25 Mar 2026
Surprise Cupra Tavascan update brings bigger screens and possibly a lower price
2026 Cupra Tavascan - front 3/4

Surprise Cupra Tavascan update brings bigger screens and possibly a lower price

The new entry-level Tavascan gets a 58kWh battery capable of around 270 miles on a single charge
News
26 Mar 2026