Comparatively, the third generation was born of positive thinking, though saying Renault has any significant influence to its development is untrue. The new Q45 (and Japan’s Cima) dares to be different. From the radical - if a bit inartistic and insensible - shape you’ll see Nissan’s designers have restored confidence, perhaps over-confident. The organic face with big eyes and man-eating mouth looks better in real thing than photo, as I can testify, but it fails to deliver any messages of prestige or elegance. Park beside an Audi A8 or Jaguar XJ8, it suddenly become a pump-up Maxima (Cefiro). Even a Volkswagen Passat feels more elegant than the radical Nissan, blame to the organic design and scarce of chromed details.  

As before, the car is 5 meters long, rear-drive and rides on front MacPherson struts and rear multi-link suspensions. The body is wider, taller but no longer. Cd. is a so-so 0.30. 40% increase of torsional rigidity provides the necessary crash protection and tauter handling that today’s customers require. More usage of aluminium castings help reducing the unsprung weight of suspensions by a little bit, about 5-10%.  

Forget it. What improves most is the V8 power plant, a development from the famous VQ-series V6 engine. Now it has restored the 4.5-litre displacement, in addition to continuous variable valve timing, 2-stage variable length intake manifold and 2-stage variable exhaust, it would have pumped out 330hp. However, the final figure has been increased to 340hp because the Japanese engineers pioneered the world’s first valves made of titanium alloy, which is 40% lighter. Why not titanium connecting rods like many supercars? that would have been more effective to power enhancement but Nissan’s intention was actually to cut valve-gear noise. 

Japanese version of the engine, called VK45DD, even employs direct-injection (therefore the second "D" in its name) to improve fuel economy, which is 22% more efficient than the old 4.1-litre engine. As usual, direct injection allow a higher compression ratio - 11.0:1 instead of the overseas version’s 10.5:1, though power figure will never reflect that because it is bounded by the 280hp voluntary limit - officially. Who believe that ? 

Still, 340 hp and 333 lbft of torque is already class leading (don’t compare it with 12-cylinders). You need a sporting Audi S8 to beat it. The problem is no one ever matches the wild performance claim of doing 0-60 in 5.9 seconds. Most found 6.5 sec more reasonable while the car never feel as powerful as the number suggest. The 5-speed Tiptronic-style automatic seems not the reason. It is the torque curve that prevent it from feeling fire-breathing. At 1,600 rpm, there is "just" 78% of the maximum torque available. The peak arrives at 4,000rpm, some 500 above Lexus LS430. 

The chassis is another let down. While it does not ride as supple as the Lexus arch-rival or Mercedes S-class, it never feel as spirited to handle as all German rivals. No matter how the sporting look and sporting engine suggest, suspensions are still bias towards comfort - maybe a bit stiffer than Lexus but body control is no better. Steering is over-assisted and lack feel. It is easy to drive fast, by then engine noise and wind noise are still Lexus-like, but it does not inspire the driver. 

Inside, the Q45 looks sophisticated. Light color scheme differs it from others while the center console with computer screen looks playful. Like HAL2000, the computer is too clever and hard to be controlled unless you own a university degree. Styling-wise, I am not a fan of the light color wood and Mitsubishi-style center console, they just do not look as classy as rivals. Moreover, the plastic material could be better. Leg and shoulder room is abundance while rear headroom is limited by the sporting roofline. Although most people won't find touching the roof, the cramped feeling above your head is just at odds to this kind of top luxury saloon. Equipment is perhaps the only area I have no complaint - the massager seat is still there, so is the integrated control located at rear arm rest. The front seat back can be folded down to serve as leg rest for the rear passenger, moreover, it has leg massager incorporated. To exaggerate the sense of luxury, Nissan even gifted it electric doors and electric boot lid. Now you need not to close the door and boot lid with strong hand. Just push it lightly towards the shut line and the electric motor will do the rest of the job and lock it. Useful? I’m not sure. What I’m sure is that this is a luxurious car designed for the back-seat boss.  

So what is it? It’s not sporting, nor classy, nor the most comfortable. It’s an infiniti without identity. The best of the 3 generations Q45 is still the Mk1.