Which gear should be used for manual transmission uphill driving?

[Hayley]

Manual transmission car uphill gear selection principles: 1. Generally, drivers should know their vehicle's uphill power capability. For small slopes, use fourth gear if it provides sufficient power. 2. For moderate slopes, use third gear if adequate; if third gear lacks power, switch to second gear (can be shifted either at slope bottom or during climb - the key is making early slope assessment and mastering clutch-throttle coordination). 3. For steep slopes, preferably use second gear if sufficient; if second gear lacks power, shift to first gear (can be done either at slope base or during ascent - crucial factors are early slope evaluation and proper clutch-throttle synchronization).