not really anything I've done to the GT, but this morning's drive took it over 195,000 miles
I've owned it for 28 months and done 43,097 miles, at a total diesel cost of £4,488 - average mpg 46.4, best for a tank was 55.4.
In that time, I've replaced the front wishbones, all ARB droplinks, turbo, clutch & DMF, battery, all shocks (for s/h units) and six tyres. Cambelt was done soon after I bought it, so its ready for another. All of the above was done at very reasonable cost due to my part-time job at Motormech.
I never thought I'd learn to live with a four-pot diesel, but its easy to drive, VERY practical, reliable (only failure was an engine earthing issue, fixed with an auxiliary earth lead) and still (to my eyes) bloody good looking (when I can bothered to clean it....)
Once its over 200,000 it will become effectively worthless (or at least very difficult to sell), so I'll probably just run it into the ground
My only current annoyance with it is the infuriatingly squeaky / rattly rear hatch - its driving me demented