« Reply #18 on: 04 February 2015, 15:56 »
I honestly think the GTD is faster on the motorway though.
The GTI will be within its peak torque range at motorway speeds, so will scoot off in 6th gear, whereas the GTI's torque will be higher up the rev range.
Put a GTI in 4th gear at 70mph next to a GTD in 6th gear at the same speed then accelerate, the difference will show itself then.
Less difference in the mk7 as the GTI has 258 lb ft at 1500 rpm and is lower geared than a GTD in 6th but the GTD does 'feel' more punchy despite the stop clock telling a different story.

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‘25 8.5R, ‘23 8R, ‘20 8CS, ‘19 135iX, ‘19 TCR, ‘17 Ed40, ‘17 GTD, ‘15 7R, ‘13 GTI PP, ‘11 GTI, ‘09 GTI, ‘98 Ibiza Cupra, ‘05 GTI, ‘06 Polo GTI, ‘04 GT TDI, ‘05 Fabia vRS, ‘02 GTI T, ‘03 Ibiza TDI 130, ‘01 Leon 180, ‘89 mk2 16v, ‘99 Ibiza TDI, ‘96 VR6, ‘98 Ibiza TDI, ‘92 VR6, ‘88 mk2 8v, ‘92 Polo G40, ‘91 mk2 8v, ‘89 mk2 8v, 205 GTI 1.9, ‘83 mk1 GTI, ‘80 Scirocco GTI, plus some others I’ve forgotten