3 ms·
manuals are still inherently more efficient than fluid couplings, and they are going to weigh 60-150 lbs less than a traditional automatic or dual clutch transm
by leetcrew 8y ago
manuals are still inherently more efficient than fluid couplings, and they are going to weigh 60-150 lbs less than a traditional automatic or dual clutch transmission. also the "small cost difference" is $1000 or more on all the new cars I've looked at recently.
- rootusrootus 8y agoThey may be inherently more efficient, all else being equal, but ... all else is not equal. Automatics now get better fuel efficiency than manuals, so expect the trend of automatics taking over to continue.
- arethuza 8y agoIsn't that because of the new generation of CVT and DSG automatics?
- rootusrootus 8y agoI don't think so. At this point, honestly, the modern slushbox outperforms CVTs and DSGs as well (though perhaps not the Porsche Tiptronic, which might still be faster). Modern automatics shift extremely fast, routinely have 8 or more gears, and have lockup torque converters that don't just lockup in overdrive on the freeway, but basically as soon as you're going more than a few mph. As a die-hard manual enthusiast I persist in buying manuals for myself, but for the last 5-10 years I have had to grudgingly admit that I have no claim to performance or efficiency, I only do it because I like to drive manuals. If I cared about speed or MPG, I'd get an automatic.
- leetcrew 8y agoi would like to see a source on this. i often see DCT or CVT versions of a car that are more efficient, but afaik, traditional fluid coupling automatics still have a hard time beating a manual transmission in the same car.
- NikolaeVarius 8y agoIt's reached the point the inefficiency of humans reduces the overall fuel economy of a manual to equal or below a modern automatic https://www.autoblog.com/2010/08/18/greenlings-why-do-automatic-transmissions-now-get-better-fuel-e/ https://www.autoblog.com/2010/08/18/greenlings-why-do-automa...
- twblalock 8y agoTraditional fluid-coupling automatics are not the only ones on the market. A lot of cars now have dual-clutch automatics, and there are others that combine a fluid coupling with a computer-controlled clutch. Fuel economy tests in many different countries have confirmed that automatic transmission can indeed be more efficient than the manual transmission in the same car.
- rootusrootus 8y agoModern automatics spend very little time with the fluid coupling. They engage a lockup converter as soon as possible. Combine that with more gears and a computer choosing the shift points, and they are now more efficient than a manual transmission. It's been that way for perhaps the last 10 years or so. Want a source? Start perusing the manufacturer specs and fuelly pages for cars that still have both options.