Power is up just 12bhp over the last 330d Touring to match the 530d estate’s 254bhp, and still peaks at 4000rpm, but torque jumps 29lb ft and chimes in 250rpm earlier than before at 1500rpm, with maximum twist still available to 3000rpm. The new, compulsory, eight-speed auto gearbox’s two extra cogs may explain why weight drops by just 10kg despite mass-saving tactics elsewhere, but performance and fuel consumption both improve markedly: 0.7sec is knocked off the 0-62mph metric, while the F31’s claimed urban economy matches the E91 auto’s combined figure at 44.8mpg. Overall returns improve by nearly a quarter to 55.4mpg, while emissions drop from 165g/km of CO2 to 135g/km, easily beating the last car’s manual choice into the bargain.
That’s no doubt aided by standard-fit start-stop, but the single chassis wag during shutdown and ensuing vocal start-up shimmies soon wear thin in incremental traffic. Idle is bassy but not intrusively loud, while rising revs produce a purposeful, but still obviously oil-burning thrum, with lots of turbo whistle off-throttle. When cruising, the engine is barely audible, revealing some roar and whine from the 18in runflats. In torrential Autoroute rain, the 330d didn’t miss a beat, maintaining isolated luxury amongst the interior’s wood and leather and excellent stability. Brakes remained reassuringly short in pedal travel and sturdy in response.
The single twin-scroll turbocharger minimises lag well, offering impressive throttle response, unobtrusively marshalled by the smooth eight-speed gearbox that is more comfortable here than in the 328i. Likewise, variable weighting (standard) and variable ratio (optional) embellishments don’t taint the faithful and commendably feelsome electric steering.
In damp conditions, full-bore starts interrupted traction, but on the move on twisty B-roads grip was strong. Despite the Touring’s sturdier rear suspension setup, more pronounced lateral body movement with the £750 adaptive dampers in either normal or sport mode means it can’t recreate the nimbleness of the 185kg-lighter 320d saloon, but primary ride is excellent, and sharp bumps merely disturb rather than upset. It feels the bigger, heavier car it is, the paucity of lag perhaps adding to its more mature nature, but agility is still excellent for its class.