Top 10 Cars with a 6-Speed Manual | Autobytel Top 10 Cars with a 6-Speed Manual By Brent Dunn While an automatic transmission is often smooth and convenient, there are times when you just want to be in control and do things for yourself. What Does 6-Speed Mean? | It Still Runs 6-Speed Manual Transmissions Traditionally, six-speed manual units have been reserved for high-performance cars. These transmissions feature closer gear ratios than a five-speed manual unit, allowing the driver to stay within the engine's ideal rpm range. Also, the sixth forward gear allows highway cruising without making the engine work so hard.