The 1.6 TDI is not the quietest diesel. It generates a gritty-sounding dirge that creeps into the interior when you’re accelerating, and this only relents on a steady throttle. The 148bhp 2.0-litre diesel is much smoother and quieter throughout. We haven’t driven the 187bhp 2.0-litre diesel yet, but it’s likely to be gruffer, although not to the point of annoyance.
Both petrol engines are very smooth and relatively quiet in everyday use. The 1.2-litre unit only gets noisier by dint of being underpowered and needs to be revved hard to keep up with fast-moving traffic.
The Touran doesn’t suffer undue wind or road noise and, indeed, in our noise tests, it proved to be quieter than the Citroën Grand C4 Picasso at 30mph and 70mph. The Touran is also one of the best cars in the class for keeping mechanical vibration to a minimum, while the clutch is light and precise, and the gearshift is no chore.
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