Parkers overall rating: 3.5 out of 5 3.5

Miles per pound (mpp) Miles per pound (mpp)

Reliable fuel consumption data for comparison purposes is not available for this model.

Fuel economy

A more stringent standard for fuel economy (WLTP) was introduced from September 2017, and this model was not required to undergo that test. Its fuel economy measured under the previous test system was 50 - 70 mpg. However these figures are less likely to be achievable in real world driving and so should never be compared to another car's mpg which was measured under the newer, more realistic WLTP system.

For the lowest Peugeot 308 GT running costs, it’s a diesel you’ll be wanting. Returning a claimed 70.6mpg in hatchback form or 68.8mpg in SW (or estate), either version is impressive in this respect. It’s the case for tax too – the CO2 emissions of 103g/km and 108g/km respectively mean VED will be palatably low and Benefit-in-Kind won’t break the bank either.

With that said, don’t discount the petrol. It also has impressive fuel economy of a claimed 50.4mpg – don’t forget petrol is cheaper to buy – and emissions of 130g/km.

Insurance is set to be good value too, with groups ranging from 16 for the diesel hatchback to 19 for the petrol hatch.

It’s worth noting those tyres – which are definitely at the premium end of the spectrum – cost £105 each at time of writing. That’s a cost you’ll have to absorb at some point.

If you want to save the rainforest, your best bet is the diesel hatchback. In that configuration Peugeot 308 GT emissions are low, pumping out just 103g/km of CO2.

It’s worth noting that in terms of other harmful emissions, the petrol model would be a better choice. You do pay for it with the tax man, though.

We’ve not seen much to concern us regarding Peugeot 308 GT reliability. The firm states it has tested all components extensively, and we didn’t notice any rattles or other noises to worry us.

With that said, there have been a couple of recalls for the 308 over its life cycle, but nothing so dramatic as to put you off. Just make sure if you’re buying a used one it’s been sorted, and if your car is recalled, get the work done as soon as you can.

Ongoing running costs

Road tax (12 months) £20 - £165
See tax rates for all versions
Insurance group 26 - 28
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