Peugeot 508 SW running costs and reliability

2019 onwards (change model)

Running costs rating: 4.2 out of 54.2

Written by Keith Adams Published: 17 May 2021 Updated: 24 January 2024

Miles per pound (mpp) ⓘ

Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only, and typical current fuel or electricity costs.

Petrol engines	5.3 - 7.3 mpp
Diesel engines	5.8 - 8.1 mpp
Plug-in hybrid petrol engines *	5.7 - 6.8 mpp

* Fuel economy of the engine when operating without assistance from the electric motor and battery.

What is miles per pound?

Fuel economy ⓘ

Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only.

Petrol engines	36.3 - 50 mpg
Diesel engines	45 - 63.6 mpg
Plug-in hybrid petrol engines *	39.2 - 46.6 mpg

* Fuel economy of the engine when operating without assistance from the electric motor and battery.

View mpg & specs for any version

Efficient range pair of engines available
Impressive claimed fuel economy on PHEV
Low running costs promised for 130hp model

What are the running costs?

The Peugeot 508 SW is powered by an efficient petrol or plug-in hybrid powertrain and shares many components with the 308 and 508 SUVs, making it a cheap car to fuel and service.

Unsurprisingly the petrol 508 fare the worst for fuel economy, but things aren’t too terrible. The PureTech 130 will easily average 40mpg in daily driving, and if you don’t work the engine too hard this shouldn’t be difficult to beat that.

The 508 SW Hybrid’s eco credentials are as good as any other PHEV you care to mention. The fact it can drive an easy 25 miles on battery alone will cover many people’s commutes, making it an ideal choice for city dwellers. Clearly its 235mpg claimed will drop drastically once the batteries are depleted.

Servicing and warranty

Peugeot’s image for reliability and dealer service is rapidly improving. Customer service is rated highly, and in the JD Power Vehicle Dependability Study, Peugeot topped the table with 77 faults per 100 cars – beating Skoda, Hyundai and Nissan.

Peugeot doesn’t offer fixed-term servicing or maintenance plans, but many of its larger dealer groups do. However the firm offers a selection of fixed proce repairs on a two-tier system based on whether the dealer is using Peugeot or Peugeot-approved parts.

It shouldn’t prove too costly to service and maintain the 508, with service intervals of one year or 20,000 miles, while a three-year, 60,000-mile warranty is standard.

Reliability

Peugeot’s reliability has improved in recent years
No recalls for the 508 so far
Feels solidly built and of good quality

Peugeot has managed to shake off its reputation for building unreliable cars. The company has successfully become one of the most dependable car manufacturers in recent years, and you can tell – to some degree – with the 508.

The quality of materials is impressive throughout the interior of the car, and it feels solid. There are some niggles with the infotainment system and its speed, but that’s not necessarily a reliability issue. And while the engines are recent, few problems have been reported, so you shouldn’t have too much to be concerned about.