One problem related to engine has been reported for the 2008 Volvo XC90. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Volvo XC90 based on all problems reported for the 2008 XC90.
Took delivery of Volvo Xc90 on Feb 4, 2008. On Feb 11, 2008 with 435 miles, the car lost almost all its engine oil and the computer displayed "low oil level" message. All the time, it was spewing bluish/white smoke during initial start up and acceleration. Was flat-bedded to the dealer and it took 11 days to repair. Spark plug was initially replaced, didn't work, then it turned out to be the inner timing chain housing seals which were all replaced according to the work order. I did not get the old parts/seals/gaskets that were replaced. All I have is a detailed work order of what was done. Currently, engine is still spewing white smoke occasionally and I have to check the oil level periodically, just to make sure this vehicle is not going to leave me stranded. Volvo cars of na offered to give me an extended warranty at no charge because of this. I initially wanted for them to replace the car because of the failure of its engine within a week of delivery. I did not get a response to my request, instead, they continued repairing the vehicle and returned it back to me, 11 days later with the extended warranty offer.