All generations of Volvo XC90 have had problems with the electrical system caused by water leakage, which erodes the central electronic module. Braking problems are well known for the 2016 - 2020 models, whereas transmission and engine failure are known in the 2003 - 2005 model years.
Average performance 90% Real MPG 19-38 mpg MPGs submitted 493 Diesel or petrol? If you're unsure whether to go for a petrol or diesel (or even an electric model if it's available), then you need our Petrol or Diesel? calculator. It does the maths on petrols, diesels and electric cars to show which is best suited to you. Satisfaction Index f583EiJ.