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Greenlings: Why do automatic transmissions now get better fuel efficiency than manuals?

Why do automatic transmissions now get better fuel efficiency than manuals?

Not so long ago, it was common for automatic transmissions to be referred to as slushboxes, since that's how they often behaved. Rather than use a mechanical clutch, traditional automatic transmissions use a fluid coupling between the engine and the gear-sets to transmit drive torque. This provides some benefits, but isn't a perfect system.

Double-clutch transmissions graduate to the world of commercial trucks

Fuso Duonic dual-clutch-transmission – Click above to enlarge

SAE 2010: Affordable technology key to meeting the 2016 CAFE rules

Affordability as the watchword Tuesday as automotive engineers at the SAE World Congress discussed how to meet the new 2016 corporate average fuel economy standards. Automakers will have to get their fleets to an average of 34.1 miles per gallon (35.5 equivalent with other factors for the EPA CO2 limits). Most automakers are already well on their way to this level with their next-generation designs. However, to do it they will

Ford starts production of 6-speed dual clutch PowerShift transmission

Ford PowerShift transmissions on the line – Click above for high-res image gallery

Ford starts production of six-speed dual clutch PowerShift transmission

Ford PowerShift transmissions on the line – Click above for high-res image gallery

Ferrari reportedly hard at work to combat turbo lag

Try explaining turbocharging to someone who doesn't know cars, and if you do a good job, you're likely to get a reaction something along the lines of, "then why don't they put turbochargers on all cars"? Well, that's a perfectly fair question, and the answer of course is turbo lag. It's one major downside to using spools, and it's what's keeping Ferrari, for one, from implementing them immediately.

Ford announces 2.0-liter EcoBoost and dual-clutch gearbox for 2010

Ford Explorer America Concept - Click above for a high-res image gallery

Ford announces 2.0l ecoboost and dual clutch gearbox for 2010

2010 Mercury Milan Hybrid - Click above for high-res image gallery

Audi offers 3 diesels, auto start-stop in new A5 Sportback

2010 Audi A5 Sportback - Click above for high-res image gallery

Spy Shots: Ferrari F450 mule spotted fresh off the truck

The long lenses over at Team Lehmann have just uncovered what looks to be the Ferrari F450, successor to the Italian marque's already legendary F430.

Chrysler studying Fiat's 6-speed gearbox

One of the first consequences of the Chrysler-Fiat alliance could be the arrival of Fiat's new six-speed transmission in Chrysler models. Chrysler lost its dual-clutch partner Getrag, which was developing a next-gen dual clutch transmission, so Fiat's unit, still under development, is likely to arrive statewide. At least this is what Frank Klegon, Chrys

Audi adds dual clutch S-Tronic to Euro A4 and A5

Audi has just added a new transmission option to European-market versions of the A4 and A5. The company's 7-speed S-Tronic dual clutch gearbox is now available with the 2.0L TFSI four cylinder. The A5 picks up 0.3 seconds in the 0-60 run and cuts 1g/km of CO2 emissions with the new gearbox. In the sedan, the mileage is unchanged at 31.8 mpg compared to the 6-speed manual. Here in the U.S., the A4 2.0L currently comes standard with a CVT while manual and conventional automatics are opt

Volkswagen adds 7-speed DSG to European CC

Over in the UK, drivers buying a new Passat CC now have a new transmission option that gives them an extra 1.2 mpg. The 160 hp 1.8L TSI four cylinder can now be paired with VW's 7-speed DSG dual clutch gearbox in place of the 6-speed manual. The DSG yields a combined 32.2 mpg (U.S.) compared to the 31.0 mpg (U.S.) with the manual. Similarly, the CO2 emissions have dropped from 178 g/km to 172 g/km. The 2.0L TDI diesel and gasoline 3.6L V6 are available with the 6-speed DSG, in additio

Ford officially announces dual clutch PowerShift gearbox for 2010

The dual clutch gearbox installed in the Lincoln Concept C and Volvo S60 Concept that debuted at the Detroit Auto Show is now officially coming to Ford's lineup. The Getrag-supplied PowerShift gearbox was hinted at

Without Getrag DCT, Chrysler will stick with conventional 6 speed automatic

Now that Chrysler's deal to build dual clutch transmissions in a joint venture with Getrag is officially kaput, the company will stick with its existing 6-speed automatic for now. In early 2007, Chrysler announced the deal with Getrag to supply up to 700,000 transmissions a year that could cut fuel consumption by six percent. It was part of a series of powertrain announcements that

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