I have a 92 945T with over 300,000 and a 91 240 also with somewhere near 300,000. Hard to tell, both odometers quit several years ago.

No major work needed on the 240, just changed timing belt after failure, and the rear torque link bushings this year. 945T needed a head gasket about 8 years back but the previous owner had probably overheated it somewhere along the line. You need to keep up on replacing coolant hoses for long term use.

Had to replace wiper motors on both last year.

Neither are perfect by any means, but you can let them sit for months and they fire right up.

Brian Mee