engines equipped with electronic fuel injection .<sup id="cite_ref-OSS_3-2" class="reference"> [4] </sup><sup id="cite_ref-EDS_4-0" class="reference"> [5] </sup> Drivetrain options for the Mark I were either a 5-speed manual ( W50 ) or an optional 4-speed automatic transmission ( A40D ). Both transmissions featured an overdrive gear. The top gear in the 5-speed was