FORD 2011 Mustang v.1 - Manual (Page 220)

For the 3.7L V6 with 3.31 axle ratio, shift according to the following
chart:
Upshifts when accelerating (recommended for best fuel
economy)
Shift from:
1 - 2 13 mph (21 km/h)
2 - 3 26 mph (42 km/h)
3 - 4 37 mph (59 km/h)
4 - 5 43 mph (69 km/h)
5 - 6 59 mph (95 km/h)
For the 5.0L V8, shift according to the following chart:
Upshifts when accelerating (recommended for best fuel
economy)
Shift from (When not in skip shift mode):
1 - 2 17 mph (27 km/h)
2 - 3 25 mph (40 km/h)
3 - 4 40 mph (64 km/h)
4 - 5 45 mph (72 km/h)
5 - 6 50 mph (80 km/h)
Shift from (When skip shift mode active):
1-4 17 mph (27 km/h)
4-5 25 mph (40 km/h)
5-6 40 mph (64 km/h)
Skip Shift (if equipped) (V8 engines only)
This feature locks out 2 (Second) and 3 (Third) gears for improved fuel
economy. If the message center displays 1–> 4 SHIFT, shift the
transmission directly from 1 (First) to 4 (Fourth), otherwise you can
shift normally. Refer to Message center in the Instrument Cluster
chapter.
Reverse
1. Make sure that your vehicle is at a complete stop before you shift into
R (Reverse). Failure to do so may damage the transmission.
2. Press the clutch pedal to the floor to disengage clutch.
3. Move the gearshift lever into the neutral position and wait at least
three seconds before shifting into R (Reverse).
Driving
220
2011 05+ Mustang (197)
Owners Guide, 1st Printing
USA (fus)