Dubbed the T4, the 2.0-litre four-cylinder unit delivers 190hp and a useful 300Nm of torque from 1,600 to 4,000rpm.
That’s enough to propel the S90 from 0-62mph in 8.7 seconds, and on to a top speed of 130mph.
Emissions are a respectable 153 g/km, with economy of up to 42.2 mpg on the combined cycle.
The V90 achieves similar performance with 0-62mph in 8.9 seconds, 156 g/km and up to 40.9 mpg.
The T4 option commands a premium over the entry-level D4 diesel of around £600 or so, with the S90 T4 starting at £35,055; the V90 T4 is priced from £37,055.
A more powerful super- and turbo-charged T6 engine is also available in the V90 Cross Country, its 310hp squirting the V90 CC to 62mph in just 6.3 seconds.
Both are available to order now.