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Ford recalls Five Hundred, Mercury Montego sedans over fuel tank woes

Ford has announced through the National Highway Traffic Safety Administration that it is recalling nearly 3,000 examples of its Five Hundred and Mercury Montego (pictured) sedans from the 2007 model year.
The action, which affects 2,945 vehicles, is due to potentially defective welds between the filler neck and the fuel tank, a condition that could result in a fuel leak or the smell of gasoline reaching the occupants. In the worst-case scenario, a leak could cause a fire. Cars with the affected fuel tank problem could see an illuminated dashboard warning light as a result of the evaporative emissions leak being detected.
Ford will inspect and replace the fuel tank at no cost to owners (those who have already had the procedure done at-cost can apply for reimbursement), and the Dearborn automaker will begin notifying Five Hundred and Montego owners beginning August 15. Check out the official NHTSA press release after the jump for further details.

Ford recalls 1.9m cars and crossovers for defective airbags

The Basics: Ford is recalling a total of 1,898,728 vehicles to replace defective Takata front passenger-side airbags. This includes the 2007-2010 Ford Edge, 2006-2011 Ford Fusion, 2005-2011 Ford Mustang, 2007-2011 Ford Ranger, 2007-2010 Lincoln MKX and 2006-2011 Lincoln MKZ, Zephyr and Mercury Milan vehicles built in North America. The Problem: The defective airbags have been linked to ruptures that can send metal fragments at the passenger, due to deteriorating propellant. Injuries/Deaths: Ford claims it's not aware of any injuries due to the problem, but rupturing Takata airbags have been linked to a series of serious injuries and deaths. The Fix: Dealers will replace the passenger-side frontal airbag at no charge to the customer. If you own one: Look out for a letter from the manufacturer to arrange service at your local dealer. If you'd like to check if your vehicle is affected, click on the safety recalls link on Ford.com and enter your VIN. Related Video:

Ford finds flex-fuel engine design plays big role in emissions output

How bad is ethanol for your engine? There's been a lot of debate on this issue as the US considers upping the biofuel content in the national gasoline supply from 10 percent (E10) to 15 percent (E15). The ethanol industry and some scientists say higher ethanol blends show no "meaningful differences" in new engines while the oil industry says ethanol creates health risks. Researchers working at the Ford Research and Innovation Center decided to take a closer look at how a wide range of gas-ethanol blends - E0, E10, E20, E30, E40, E55 and E80 - affected the emissions coming out of a flex-fuel 2006 Mercury Grand Marquis. To see the full report, printed in the journal Environmental Science & Technology, requires payment, but there is an abstract and Green Car Congress has some more details. The gist is that, "with increasing ethanol content in the fuel, the tailpipe emissions of ethanol, acetaldehyde, formaldehyde, methane, and ammonia increased." At least NOx and NMHC emissions decreased. The researchers say that the effects are due to the fuel and "are expected for all FFVs," but that the way that a manufacturer calibrates the engine will affect NOx, THC, and NMOG emissions. It's this last bit that's important, since the researchers found, "Higher ethanol content in gasoline affects several fundamental fuel properties that can impact emissions. ... These changes can have positive or negative effects that can depend on engine design, hardware, and control strategy. In addition to direct emissions impacts, higher ethanol content fuel can also provide more efficient combustion and overall engine operation under part-load conditions and under knock-limited higher-load conditions." So, as we head towards more ethanol in our fuel supply (maybe), manufacturers are going to need to learn how to burn it most efficiently.