Parkers overall rating: 3.9 out of 5 3.9

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

Petrol engines 4.9 - 7.1 mpp
Diesel engines 5.5 - 9.2 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.

Fuel economy

Petrol engines 31.7 - 46.3 mpg
Diesel engines 36.7 - 61.4 mpg
  • Improvements on most popular engines
  • Diesel is still the most economical
  • Avoid the 2.0-litre petrol if you're after economy

Vauxhall totally refreshed the Insignia’s engine range with the facelift, and in doing so improved fuel economy across the board. Though the figures may not look all that different from the outgoing model’s, it’s worth noting that they’re now achieved under the much more challenging WLTP testing procedure.

The economy champs are the diesels, naturally, and both the 1.5-litre 122hp and the 2.0-litre 174hp units return up to 61.4mpg when they’re paired with manual gearboxes, or 56.5mpg when paired up to automatics. CO2 emissions for both are very similar, with 121g/km on offer from either manual model, 130g/km for the 1.5 auto and 131g/km for the 2.0 auto.

The two petrols are thirstier, naturally, but the 200hp 2.0-litre doesn’t disgrace itself with fuel economy up to 37.7mpg and CO2 emissions as low as 167g/km.

The GSi, with its 230hp 2.0-petrol paired with a nine-speed automatic and four-wheel drive, is the thirstiest of the bunch returning 35.3mpg and 179g/km of CO2.

Those hoping for a tax-busting plug-in hybrid will have to look elsewhere, though, to the likes of the Skoda Superb iV or Peugeot 508 HYbrid. The Insignia doesn’t offer any electrical assistance in any guise and looks unlikely to in the future – parent company Stellantis does have hybrid tech, but the Insignia wasn’t designed to accommodate it.


  • Overall Vauxhall Insignia reliability should be decent
  • A few recalls for pre-facelift model
  • Strong interior construction with plenty of hard-wearing materials

Vauxhall’s reliability record is middle-of-the-road, but with the exception of the very well-publicised Zafira fires a few years ago issues tend to be confined to small niggles rather than massive mechanical problems.

The facelifted model’s engine line-up is all-new, and sees service in the Astra – it’s too soon to tell if these units are proving reliable.

Otherwise, the Insignia’s been subject to seven safety recalls, which range from an incorrectly mounted windscreen to cracks in the turbocharger oil return pipe. If you’re purchasing a used model, make sure these safety recalls have been completed.

For the day-to-day, the Insignia feels solid and well-built. Most of the interior fittings are made from dense, good-quality plastics and should stand up well to the test of time.

Ongoing running costs

Road tax (12 months) £155 - £490
Insurance group 13 - 30
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