Peugeot 508 SW estate (2011-2018) - MPG, running costs & CO2

There aren’t any petrol engines in the Peugeot 508 SW range, but the diesels are all very good

Carbuyer Rating

3.4 out of 5

MPG, running costs & CO2 Rating

3.5 out of 5

Whatever model you choose in the Peugeot 508 SW range, you can be sure of good fuel economy and low road tax bills. That has something to do with the fact the 508 SW is a diesel-only model, because very few buyers choose petrol engines in this type of car.

Peugeot 508 SW MPG & CO2

Company-car users will naturally be drawn to the bottom-of-the-range 1.6-litre diesel version of the Peugeot 508 SW; its low CO2 emissions of 104g/km combine with a low list price to make it a pretty cheap business vehicle. And few could argue with the promise of 67.3mpg fuel economy.

Next up is the 150bhp 2.0-litre diesel version, which can manage an average of 72.4mpg and emits 110g/km of CO2. The 180bhp 2.0-litre GT range-topper emits 114g/km of CO2 (making road tax £30 a year) and returns 64.2mpg. In reality, while this model is relatively economical to run for a top-of-the-range model, it’s too expensive to buy and remains a rare sight on UK roads.


Insurance is relatively expensive for the Peugeot 508 SW. The basic car sits in insurance group 21, while the range-topping GT model sits in group 33. For comparison, a 1.5-litre 118bhp diesel Ford Mondeo Estate sits in group 17, rising to group 27 for the 2.0-litre diesel 207bhp Mondeo Titanium.


Fairly standard fare here – the Peugeot 508 SW is covered for three years or 60,000 miles. Paintwork is covered for three years and the car is guaranteed against rust for 12 years. There’s also a year’s AA breakdown cover included in the warranty.


Peugeot offers a number of fixed-price servicing plans that take the worry out of your annual maintenance bills. Cover starts from £16.99 a month for a three-year policy. However, you should be aware that the basic cover specifies an annual limit of 10,000 miles.

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