YouTube/YouCar

Even the most ardent car fan is sometimes guilty of judging a car without given a second thought to the amount of man-hours that have been invested into it. But sometimes it pays to take a look behind the scenes.

A recent trip around the Rolls-Royce factory highlighted the sheer weight of workmanship invested into each car and although not quite in the same league, the all-new BMW X4 is still lavished with some impressive attention to detail.

The video below was shot in BMW's Spartanburg plant in South Carolina, a cutting-edge facility that is about to welcome a £600million investment so it can happily pump out 450,000 units by the end of 2016 – once of those being the upcoming X7.

An all-new X4 joined the X3, X5, X5 M, X6 and X6 M family last month but, unlike the Rolls-Royce, it is lavished attention of the robot variety. Hundreds of expensive machines work on every X4 model, bolting it together, spraying on the paint and fitting various body parts with astonishing precision.

Click play on the video from YouCar below and marvel at the production process