NEW YORK (CNNMoney.com) -- In a move to boost fuel economy, Ford Motor Co. said Monday it will add an Auto Start-Stop system that shuts off the engine when a vehicle comes to a stop. The automaker said the feature will be added to its conventional cars, crossovers and SUVs in North America.
Ford's statement said that the feature is expected to boost fuel economy by between 4% and 10%, and eliminate tailpipe emissions while the vehicle is stationary.
The Auto Start-Stop system is already available on Ford's hybrid vehicles sold in North America. The system will be available for conventional vehicles in 2012.
Ford (F, Fortune 500) shares were down about 1% in premarket trading. 
| Index | Last | Change | % Change |
|---|---|---|---|
| Dow | 15,354.40 | 121.18 | 0.80% |
| Nasdaq | 3,498.97 | 33.73 | 0.97% |
| S&P 500 | 1,667.47 | 17.00 | 1.03% |
| Treasuries | 1.95 | 0.08 | 4.50% |
| Company | Price | Change | % Change |
|---|---|---|---|
| Bank of America Corp... | 13.43 | 0.07 | 0.52% |
| Cisco Systems Inc | 24.24 | 3.03 | 14.29% |
| Microsoft Corp | 34.87 | 0.79 | 2.32% |
| Ford Motor Co | 15.08 | 0.44 | 3.01% |
| General Electric Co | 23.46 | 0.19 | 0.82% |
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