The redesigned Volvo XC60 T6 scoots to 60 mph in 6.1 seconds and hangs on to a cloverleaf at a very carlike 0.87 g, but it’s not built for those feats. A less expensive, base-engine BMW X3 will easily keep up while a similarly priced Porsche Macan S will embarrass the Volvo on a winding two-lane. Buying an XC60 for its performance is like purchasing a …