Combine that level torque with a frictionless, rev-happy turbo nature and the eight-speed ZF automatic transmission and you have a car that accelerates with a gliding, step-less escalation of pace.
By 1999, when Meritor transferred its transmissions business into the joint venture ZF Meritor, it had approximately 17 % of the market for HD as a whole, which was 30% of that for linehaul truck transmissions.