2017 Vauxhall Insignia 2.0L Diesel · BU67 OGA

The 2.0-litre CDTI diesel in this Insignia typically returns 45-55 mpg on a combined cycle depending on whether it is the 170 or higher-output variant, giving fuel costs of roughly £1,400-£1,700 per year for an average UK driver covering 10,000 miles. As a November 2017 registration, this vehicle sits in the £165-£190 annual VED band for diesel cars priced over £40,000 new, though most Insignias of this generation fell below that threshold so it likely sits at the standard £165 rate. Insurance is reasonable for the class — group 18-25 depending on trim — meaning roughly £450-£700 per year for a typical buyer.

Maintenance costs are the bigger variable. Annual servicing on a 2.0 diesel Insignia averages £180-£280 depending on whether an independent or franchised garage is used, and consumables like brake discs and pads, tyres and suspension components tend to crop up every 20,000-30,000 miles. Coil springs in particular are known wear items on this generation, and replacement is a common reason Insignias fail their MOT. Realistically, budget £800-£1,100 per year all-in for fuel, tax, insurance, servicing and a sensible maintenance reserve.

Start with the coil springs at the front and rear, as these are the single most common MOT failure point on the Insignia and the dataset shows they top the failure list across 239,640 examples. Push down firmly on each corner and listen for knocking or squeaking over uneven ground. Next, inspect all four tyres for even wear and minimum tread, as tyres are the second most common failure reason. Check the sidewalls carefully for cracking, which can develop on low-mileage cars that have sat unused for long periods.

Given corrosion ranks third in the model failure data, examine the rear wheel arches, the leading edge of the bonnet, the bottom of the doors and the underbody mounting points for the exhaust and suspension. Even though this specific vehicle has a clean MOT record with no advisories for corrosion, the Insignia is known to develop surface rust in these areas from around the five-year mark, and this car is now eight years old. Finally, check the dual-mass flywheel and clutch for juddering or rattling on the 2.0 diesel if you can cold-start it, listen for timing chain rattle on startup, and confirm there is no excessive smoke from the exhaust on overrun.