THE crew-cab version of Nissan D40 Navara has been given a mid-life facelift that brings engine, styling and safety upgrades., , Acknowledging that this premium work ute does double duty as family transport and weekend sports machine, Nissan has added more features and put greater emphasis on safety., , Front, side and curtain airbags are now standard on crew-cab models and ESC is standard on the diesel, but unfortunately not on the petrol version., , The diesel engine has been given a big boost, with the 2.5-litre four now pumping out a handy 140kW and 450Nm., , The 4.0-litre petrol V6, which produces 198kW and 385Nm is unchanged., , Nissan has changed the front end design of the Navara, but subtly.