The fruits of that investment are plain to see: a new nose with prominent grille, revised body detailing with new rear lights and side mouldings, reworked suspension settings and an all-new interior. There's also a new engine, a 142bhp 2.2-litre four-cylinder unit with balancer shafts that, for the time being, supplements the existing 134bhp 2.0-litre unit which, with CD trim, accounts for the bedrock of Omega sales. In time - probably by early next year - this engine will replace the 2.0-litre. It's enough, Vauxhall hopes, to give the new Omega fresh impetus and greater impact in a sector that's becoming increasingly dominated by brands such as Audi and BMW.
Vauxhall wants to raise the Omega's profile as a voluminous estate, especially now that many high-profile users, including several police forces, have switched out of the Omega in favour of other manufacturers' products - notably Volvo. With prices starting at ú20,705 on-the-road for the 2.0 GLS manual estate, value is key to the revised Omega, and a vast range encompasses six trim levels - GLS, CD, CDX, MV6 and Elite. Five engines include 2.0 and 2.2-litre fours, 2.5 and 3.0 V6s and a 2.5-litre turbodiesel giving comfortably the biggest range of any large estate car: it's the 2.2 CD we test here, at ú22,105 OTR.