How much is 30bhp worth? In the case of VW Tiguan, £900.
That's the premium for choosing the higher-powered version of the 2.0 TDI, which has 168bhp rather than 138.
Is it worth it? Well, that depends how much you value a little extra pace.
On paper, there's a 1.6 second improvement on the 0-62mph figure, but it doesn't feel that much quicker in practice.
The 22lb ft increase gives slightly stronger responses, but peak power arrives 200rpm later. The higher-powered version isn't any more useful as a tow car, either, due to an identical maximum towing limit.
The extra pace does enhance the Tiguan's credentials as one of the sportiest small 4x4s around, of course.
It's fun to drive, thanks to responsive steering and handling that's more akin to a hatchback than a bulky off-roader.
Refinement is pretty good too, although the diesel engine isn't as smooth or quiet here as it is in some other VW Group products.
Engine apart, the TDI 170 is identical to the lower-powered model, but it offers less choice. You can't order it in entry-level S trim, for a start, so prices start at £22,695.
There's also no automatic gearbox option, or the choice of Escape trim, which has added features that boost the Tiguan's off-road credentials.
As well as the higher price, running costs are a little higher than the TDI 140's; fuel economy is only 0.5mpg worse, but higher CO2 emissions push it up one company car tax bracket, so higher-rate taxpayers pay an extra 16 per month.
With finances as tight as they are now, every penny counts and we reckon this is 900 you don't need to spend.
VW Tiguan 2.0 TDI 170
On sale Now
You'll like More grunt, but little impact on running costs
You won't The standard 2.0 TDI is £900 cheaper