Suggested maximum speed in each gear
Downshift to a lower gear if the engine is not running smoothly, or if you need to accelerate.
Do not exceed the maximum suggested speed (shown below) in any gear. For level road driving, use the highest gear suggested for that speed.
Always observe posted speed limits, and drive according to the road conditions, which will ensure safe operation. Do not over-rev the engine when shifting to a lower gear as it may cause engine damage or loss of vehicle control.
MR20DE engine models:

QR25DE engine models:

See also:
Advanced Safety Systems, A Variety of Models and Packages
The 2009 Frontier includes a long list of safety equipment, including Zone
Body construction with front and rear crumple zones, Nissan Advanced Air Bag
System (which includes dual-stage front supp ...
Radio
Place the ignition switch in the ACC or ON
position and press the POWER/VOLUME control
knob to turn the radio on. If you listen to the
radio with the engine not running, the ignition
switch sh ...
California perchlorate advisory
Some vehicle parts, such as lithium batteries,
may contain perchlorate material.
The following advisory is provided: “Perchlorate
Material - special handling may
apply, See www.dtsc.ca.gov/
...
