170 injectors are covered under a national recall so no problems there :)
On the 140, things to note
Cylinder head can become porous - ok on rev C (mid 2006+) to check which you have look for a number under the furled lines on the top of the engine, bottom right corner under the fuel lines.
Turbo whine but you can get this on both 140 and 170
Hot start problem - car takes a little longer to start when hot, likely cause is a worn starter motor.
That's about it really :)
