Warranty is for three years, but limited to 60,000 miles (most rivals offer unlimited mileage cover). New prices look attractive, but Impian loses a lot in depreciation. Fuel economy is good and insurance groups are average. Service intervals are not long enough – every 9000 miles.

Impian performs quite well on the eco front. With an average of 182 g/km CO2 across the model line-up, its emissions are quite low for a medium-sized saloon. It’s worth noting that the line-up does not feature any diesel models, which typically produce less carbon dioxide than petrol engines with similar power outputs. The range is not particularly economical, averaging 38 mpg.

Protons have a reputation for mechanical strength, but the interior trim doesn’t tend to be as strong. No reliability problems have been reported to us by owners.