AMG Line alone doesn't bring a lot more to the table, other than 19in alloy wheels, a rear armrest, privacy glass and more aggressive styling, so we'd go for AMG Line Premium, which adds 10.3in screens for the infotainment and instruments, Apple CarPlay and Android Auto, wireless phone charging, augmented reality sat-nav, power-folding door mirrors, keyless entry and front and rear parking sensors. That makes it our pick of the range.