2003 Nissan Sentra Owner's Manual - Page 120

For quick acceleration in low altitude areas (less than 4,000 ft [1,219 m]) and normal acceleration in high altitude areas (over 4,000 ft [1,219 m]): For QR25DE engine models: 6-speed QR25DE engine models: 5-speed GEAR CHANGE 1st to 2nd 2nd to 3rd 3rd to 4th 4th to 5th MPH (km/h) 15 (24) 25 (40) 40 (64) 45 (72) GEAR CHANGE 1st to 2nd 2nd to 3rd 3rd to 4th 4th to 5th 5th to 6th MPH (km/h) 15 (24) 25 (40) 40 (65) 45 (75) 50 (80) GEAR CHANGE 1st 2nd 3rd 4th 5th GEAR CHANGE 1st 2nd 3rd 4th 5th 6th MPH (km/h) 35 (55) 60 (95) 85 (35) - - MPH (km/h) 25 (45) 50 (80) 80 (130) - - - For quick acceleration in high altitude areas (over 4,000 ft [1,219 m]): For QG18DE engine models: 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. QG18DE engine models: QR25DE engine models: 6-speed Gear change 1st to 2nd 2nd to 3rd 3rd to 4th 4th to 5th GEAR CHANGE 1st to 2nd 2nd to 3rd 3rd to 4th 4th to 5th MPH (km/h) 15 (25) 35 (55) 45 (75) 50 (80) MPH (km/h) 15 (24) 25 (40) 40 (65) 45 (75) For QR25DE engine models: 5-speed GEAR 1st 2nd 3rd 4th 5th MPH (km/h) 30 (50) 55 (90) 85 (135) - - 5-12 Starting and driving