The 1.6-litre diesel engines are smooth and generally quiet, whereas the 2.0-litre diesel is noisier, and sounds gruff and clattery – even under moderate acceleration.
The manual gearbox has a notchy, imprecise shift, while the semi-automatic EAT6 'box causes the car to lurch between changes. There’s a conventional automatic gearbox available on the 2.0-litre diesel, and while it swaps cogs more smoothly, it's still quite slow to respond when you ask for a sudden getaway.
Overall refinement is otherwise good, though. Wind and road noise are well suppressed, making the Grand C4 Spacetourer a relaxing motorway cruiser.
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