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it will gain a combined fuel economy of 53.3 MPG from 51.4 MPG

Mercedes is updating its E-class line-up with a new nine-speed automatic.

Last weekend, Mercedes-Benz’s German language website configurator revealed that the nine-speed automatic -- known as 9G-Tronic -- will now be standard on the rear-wheel-drive E350 BlueTec. It will replace the seven-speed 7G-Tronic automatic gearbox, which will now be standard equipment on the E220 BlueEfficiency Edition.


While bringing the 9G-Tronic along won't change the E350 BlueTec’s ability to hit 0-62 MPH in 6.6 seconds, it will gain a combined fuel economy [European rating] of 53.3 MPG (from 51.4 MPG with the 7G-Tronic). This is due to a boost in city MPG from 40.9 to 44.1. 

The 9G-Tronic also brings reduced average CO2 emissions from 144g/km to 138g/km.

Back in May, Mercedes said it was aiming for 45 MPG highway on the new 2014 E250 Bluetec 4Matic diesel sedan. Its 2.1-liter, 4-cylinder turbodiesel engine uses twin sequential turbochargers for 195 HP and 369 lb-ft of torque.

Source: Autocar



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RE: Are 9 Gears Really Necessary?
By PaFromFL on 7/23/2013 9:33:03 AM , Rating: 2
It's ironic that the number of gears is increasing at the same time more engines are turbocharged and exhibit broad torque curves starting at relatively low rpms.


"Young lady, in this house we obey the laws of thermodynamics!" -- Homer Simpson














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