|Fiat 500 Start&Stop. Click to enlarge.|
Called Fiat 500 Start&Stop, the new technology is based on the most successful 500 version—the 1.2 Lounge. The Start&Stop system stops the engine automatically (without the driver turning an ignition key) whenever traffic conditions bring the car to a complete halt, and restarts it when the driver wants to move off again.
With Start&Stop, CO2 emissions on the 1.2 engine are 113 g/km, while fuel consumption can be reduced by up to 11% (urban fuel economy figures).
|Fiat 500 Fuel Consumption|
1.2 69 bhp
1.2 69 bhp
|Urban cycle L/100km (mpg US)||5.7 (41.3)||6.4 (36.7)|
|Highway L/100km (mpg US)||4.3 (54.7)||4.3 (54.7)|
|Combined L/100km (mpg US)||4.8 (49)||5.1 (46)|
Several sensors and control strategies are employed to manage stop and restart operations, to guarantee safety, driveability and energy balance of the car with a minimum impact on heating and other services in the car.
Engine stop is only allowed once a speed of 6 mph has been achieved after pulling away. To restart the engine the clutch pedal must be depressed. The Start&Stop system can be manually activated or deactivated using a button switch.
Start&Stop will not activate in certain cases, including engine still cold, battery in low charge state, heated rear window active, front wiper at maximum speed or reverse gear engaged (in a parking manoeuvre).
If the engine has been stopped and the clutch pedal has not been depressed for more than three minutes, the engine can only be restarted using the ignition key. Similarly, if the engine has been stopped and the driver’s seat belt has been unfastened, or a door has been opened, engine restart will only be achieved with the key.