There may be new engines available elsewhere in the range, but the 1.6-litre diesel is carried over from the clattery old Insignia. While that set alarm bells ringing with us, we needn’t have worried. Although you can tell it’s a diesel from outside, the motor is impressively hushed from behind the wheel.
At idle and under acceleration there is some clatter, but it’s largely well muted, while at a cruise you barely hear it at all. The 2.0-litre diesel isn’t as impressive, sending more vibrations and noise inside the car. As for the petrols, the 1.5-litre and 2.0-litres are even quieter with a more refined idle and fewer vibrations through the steering wheel. They do sound a bit strained at the top of the rev-range, though.
Engine noise isn’t the biggest problem: even with the smallest 17in wheels, road roar is surprisingly noticeable at all times. At motorway speeds, this becomes an irritatingly constant drone that makes it hard to relax.
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