Perhaps of greater significance is the optional Active Driveline system, an on demand four - wheel drive system which is promised to improve fuel economy by operating in front -
wheel drive mode during steady - state driving at above 22 miles per hour.
Not exact matches
During a fierce slush storm, we cruised along in all -
wheel -
drive mode, which we switched into using a handy rotary knob near the center armrest, without so much as a whiff of anxiety.
In addition to
drive modes, the Ford Fiesta ST also gets brake - based torque vectoring — which brakes the inner front
wheel during cornering.
But, this potent internal combustion engine also benefits from a regenerative - powered electric motor
driving the rear
wheels either automatically when required
during cornering and in strong acceleration — giving a power boost of as much as 45 ps — or in a button - activated creep -
mode at low speeds to avoid emissions in city traffic or when «stealth» is required.
Still, there are enhancements for the 2015 model year, including a standard backup camera and leather - wrapped steering
wheel, a new «Brake»
drive mode on the gearshift that increases regenerative braking
during deceleration, a light in the charging port and the ability to unlock its little door from the key fob, as well as an available energy - saving hybrid heater system.
This
mode may not be ideal to use when wanting to
drive in a sedate manner; nor when road conditions are very slippery, due to ice, snow or torrential rain — because loss of tire traction may be experienced (
wheel spin
during acceleration, and may also result in road
wheel locking
during downshifts at high engine rpms under closed throttle).
Rather than the Multitronic continuously variable transmission used in the past, the 1.8 - litre A6 now
drives to the front
wheels by the medium of a seven - speed S tronic (dual - clutch) transmission, which offers a «freewheel»
mode to boost fuel efficiency further
during open - road cruising.
The system operates predominately in front -
wheel -
drive mode during dry - pavement cruising conditions and continuously proportions torque to the rear
wheels during acceleration and low traction situations.
When placed in Auto
mode, Active
Drive I will send power to the front
wheels during normal
driving, but send power rearward the second
wheel slip is detected.
Interior Features • 5 passenger seating • Cockpit - like seating with raised console / shifter for controllability and quick response • Unique center console design, created to look like a sport motorcycle tank while also supporting driver's knee
during cornering • High eye - point for increased visibility • Available Integrated Control (I - CON) system with automatic air conditioning that allows driver to choose between three
drive modes (Sport, Normal, Eco) • Cloth seat fabric with available premium fabric • 6 - way manual driver's seat, 4 - way manual front passenger seat • 60/40 fold - down 2nd row seats for increased cargo room • Available leather - appointed seats • Available heated front seats • Available leather - wrapped steering
wheel • Storage under rear cargo floor (FWD models only) • Dual front and rear beverage holder • Speed - sensitive door locks
Using simulation of an empirically validated model that incorporates the dynamics of the electric powertrains, the vehicle performance, longitudinal slip and power utilization
during straight - ahead
driving and cornering maneuvers under the different
driving modes are compared.The three
driving modes enable significant changes to the vehicle behavior to be induced, allowing the responsiveness of the car to the steering
wheel inputs and the lateral acceleration limits to be varied according to the selected
driving mode.