2010 Volvo XC60 T6 AWD: Torquey, But What's That Sound?
October 06, 2009
Lag? What lag? Our long-term 2010 Volvo XC60 packs a turbocharged I6, but you'd never know it from the way it delivers torque from a standstill. It's a robust and hearty (yes, I just ate some chili) mill that simply drives like a large-displacement engine. Just a nice, linear pull, even at part-throttle. A tip of the hat to modern twin-scroll turbos like the one tucked away behind that black slab pictured above.
During steady part-throttle acceleration, its turbocharged nature is revealed--this engine makes a hollow sucking sound that, once noticed, is difficult to miss. Dip the throttle more aggressively or chop it completely and the sound goes away. Based on the driving circumstances that produce the sound, I'm almost certain that the turbo's compressor bypass valve is responsible.
Aside from that, it's a smooth operator that falls nearly silent at a constant cruise. This is a solid engine.
Jason Kavanagh, Engineering Editor @ 5,537 miles.