What is it?
This is Infiniti’s much-needed diesel-powered FX SUV, which will dramatically increase the brand’s chances in a European market segment that is 80 per cent oil burning. Of the three thousand or so Infinitis sold in the EU so far, 55 per cent have been FX models.
The FX30d is powered by a version of the Renault-Nissan V6 turbodiesel engine, albeit much modified. Infiniti’s involvement in the V9X project from inception means it gets changes to the block, crankshaft, turbocharger, heads, sump and intercooler system.
The block is made from Compacted Graphite Iron, the heads are aluminium and the variable nozzle turbocharger sits in the ‘V’ of the engine. The unit develops 235bhp and 406lb ft of torque, which peaks at just 1750rpm.
The active engine mounts work in two stages; soft at start-up to damp out vibration and then stiffer when the FX is traveling at higher speed. The latter mode also improves the handling by more securely locating the engine.
The engine drives a 7-speed autobox, which, in turn, drives the car’s ATTESA all-wheel drive transmission. Fundamentally, the FX is a rear-drive car with a front-mid-mounted engine. That means under normal conditions, 100 per cent of torque goes to the rear wheels, up to 50 per cent to front on slippery surfaces.