Mercedes has announced plans to expand its luxury electric EQS saloon into a tougher, taller and pricier SUV under the same name in December. Prices for the EQS-badged SUV are to start at €110,658 in its home market of Germany, making it €3,000 more than the already expensive basic model. That price gets you an SUV that is almost 15 cm shorter than the saloon (at a total length of 5.13 metres) with an identical wheelbase (3.21 metres), but a 20 cm higher roof offering more headroom. The luggage compartment can hold up to 2,100 litres and a third row of seats is also available on request. Merce…