Launched in 2014, the original NX was Lexus's best-selling model in Europe with more than 175,000 sold. Now it's back, with Lexus claiming "it opens the next chapter for the brand".

To do this, the new mid-size model gets a fresh look inside and out, a new platform and updated infotainment. Most importantly in the NX450h+, Lexus has its first plug-in hybrid electric model. 

Outside, the new NX is best described as an evolution rather than revolution. However, by using the new Lexus Global Architecture K (GA-K) underpinnings, the new NX is 20mm longer and has a 30mm longer wheelbase. Plus, it's 20mm wider and 5mm taller. Apart from the additional length, you'll spot the new NX by its more upright grille, mesh pattern and new headlights, which include the DRLs and are fitted with projector LEDs on top models. 

At the side, the new NX has distinctive rear haunches and softer metal detailing. This Lexus can be identified by its signature blade rear lighting - which now spans the width of the model. Plus, the Lexus emblem has been replaced by the word 'LEXUS' spelt out across the tailgate. 

Inside, there are significant changes for this latest model. Most notable is the new infotainment, with entry-level getting a 9.8in screen and top models getting a massive 14in high-definition touchscreen - one of the largest in its class. Highlights include up-to-the-moment route information, with cloud navigation as standard, a voice recognition system that responds to conversational commands, such as the 'Hey Lexus' assistant and over the air updates. Elsewhere, the new NX debuts Lexus's new Tazuna driver's cockpit concept, which basically means all the displays are grouped, so they can be read at a glance. The head-up display also has three modes, giving maximum or minimum information. 

The number of switches has been reduced and they have been grouped according to their function. They've even done away with the interior door handles, replacing them with their e-latch system. To get out, there are small buttons in the door panel. It works in a smooth, Tesla-like way and Safe Exit Assist, which works with the Blind Spot Monitor, prevents the doors  from being opened into the path of traffic.  

The new infotainment is certainly easy to use on the move, the switchgear seems well placed and the longer wheelbase equals more space. It certainly feels less cramped than before, and now has a 545-litre boot that can be extended to 1,436-litres with the rear seats down. 

There is an NX350h self-charging hybrid version, but of more interest to fleet buyers is the NX450h+ that we drove and its 7% BiK figure. This is thanks to the hybrid technology, with a new four-cylinder 2.5-litre petrol engine at the front, that is mated with a 13kW front electric motor, a 40kW rear electric motor and a 18.1kWh lithium-ion battery.   

The result is 306hp, yet CO2 emissions ranging between 20 to 26g/km and up to 61 miles EV-only power, both dependent on grade and equipment. With recharging, 100% is capable in around 2.5 hours via a 230V/32A connection and the on-board charger. Cleverer is that when power from the EV battery runs out, the NX450h+ operates as a full hybrid, bringing all the economy and emissions benefits of the system. 

On the road, with the lower centre of gravity and wider tracks that are part of the new Global Architecture, the NX is a tidy handler despite its tall SUV shilouette. The ride is also impressively resolved and refined - apart from around town, where it's more troubled.