Re: 166 2,4 JTD reliabilty
I cant coment on the 166 but for the 2.4JTD engine it is very good. You should look out for the following if buying a second hand car.
1.Turbo-> alfa uses Garret are are probably the best and most realiable turbos out there...Mercedes use's Garret as well. But in old card the turbo might be over...look for oil leaks from it and abnormal pulling power over 2000rpm.
Changing oil frequently is very important for the turbo...so have a look at the service book...
2.MAF- or the sensor that measures the air going into the engine...It is made by Bosch and fitted on Audi,Mercs, and many others...Bosch belives it is something like the oil change so it usually needs to be replaced somewhere between 60 000-80 000km's....the problem is that it doesnt show a faulty code on the diagnosis computer...But if the car pulls hard from 2000 to 3000rpm then stops the MAF should be replaced...with other words if the car has strange beheviour when accelariting the MAF might be "over"
the are three versions of this engine....136hp, 140hp and 150hp. the the 140is much quiter then the 136 and same can be said for the 150hp...remeber you can always get a remap for your can and turn it into real performance alfa....170hp to 190hp with huge amount of torque for overtaking
Good luck with getting the righ car.
Alfa 147 QVD 300hp by BlackAngels, Alfa 159 2.4 QVD, Alfa 159 TI 1.9 QVD and Crosswagon edition Nero