What’s it like?
On the road it’s an impressive, if slightly vocal piece of engineering. For starters, it's got a redline above 5000rpm and spins freely up to it. Peak torque of 406lb ft appears at 1750rpm, which means that you can lock it in fourth gear (roughly 20mph/1000rpm) and dispatch challenging B-roads or motorway sliproads with at least as much ease as in the petrol version.
In fact, the pairing between diesel engine and gearbox is much better resolved and less fidgety than in the manual, but still retains the typical Infiniti-style changes, where it holds the lower gears for engine braking if you lift off from high revs.
Infiniti claims 33.2mpg on the combined cycle for the new engine and 224g/km of CO2. We saw a displayed 28.9mpg on the test route, which shows an improvement in fuel consumption of around 20 per cent over our petrol-engined EX37 long-term test car, which achieved 23mpg on the same roads.
That’s less than the claimed 40-plus mpg in the similarly priced Mercedes E350CDi coupé or substantially more expensive BMW 635d, but the Infiniti’s four-wheel drive and ‘everything but the kitchen sink’ spec in the Premium edition - which now includes a lane warning system that alerts you and redirects the car if you drift into the adjacent lane on a motorway - will readdress the balance with less economy-conscious drivers.
ShouId I buy one?
If you feel that there’s little more to the appeal of a car than its peak power output, top speed, 0-60mph time, fuel economy and boot space, then the EX30d is probably not the car for you.
Those headline figures hide the linearity of the power delivery, the absorbent ride, the seemingly endless supply of ‘techy’ gadgets (the Around view Monitor, an aerial view parking camera, is almost worth the list price on its own) and the beautifully finished, understated cabin.
If these much more emotional, less quantifiable features appeal, then it’s definitely worth taking one for a test drive.
Infiniti EX 30d GT Premium
Price: £41,220; Top speed: 137mph; 0-62mph: 7.9sec; Economy: 33.2mpg (combined); CO2: 224g/km; Engine: 6 cyls, 2993cc, turbocharged diesel; Power: 235bhp; Torque: 406lb ft; Gearbox: 7-spd automatic
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