The Mercedes E-class has long been the German company's most important model, so it's no surprise that it has pulled out all the stops for the latest version. In our review, Chris Knapman looks in detail at its comfort and technology to see if it can beat the BMW 5-series, Audi A6 and Jaguar XF. Visit the Telegraph Cars website for full reviews of the latest cars on sale: http://www.telegraph.co.uk/cars/ Read the full Mercedes E-class review: http://www.telegraph.co.uk/cars/mercedes-benz/mercedes-e-class-review/ BMW 5-series review: http://www.telegraph.co.uk/cars/bmw/bmw-5-series-review/ Audi A6 review: http://www.telegraph.co.uk/cars/audi/audi-a6-review/ Jaguar XF review: http://www.telegraph.co.uk/cars/jaguar/jaguar-xf-review/ Follow Telegraph Cars on Twitter https://twitter.com/TeleCars Read the latest car news: http://www.telegraph.co.uk/cars/news/