The package includes sport seats wrapped in nappa leather / black leather with grey topstitching, an instrument panel with a typical Brabus look as well as a Brabus - styled dashboard instrument with cockpit clock and rev counter. (mercedesblog.com)
The Smart electric drive models come with additional dashboard instruments which show a power meter and battery status display. (paultan.org)
Prime starts from # 13,960 (or # 14,555 for the turbocharged car) and gets leather heated seats and a couple of extra dashboard instrument pods. (evo.co.uk)