The 2020 Infiniti Q60's 7-speed automatic transmission is designed to feel different in Sport mode—quicker, more aggressive shifts match the sports coupe character. But when does aggressive become problematic? Understanding what's normal for Sport mode versus what indicates actual issues helps interpret your Q60's behavior.
Sport Mode Versus Normal Mode
Sport mode intentionally changes transmission behavior: shifts are quicker and firmer, downshifts are more aggressive, and the transmission holds gears longer at higher RPM. Some firmness you'd never accept in Normal mode is expected—even desirable—in Sport.
Normal Sport Mode Characteristics
- Firmer, more decisive shift feel
- Quicker upshift execution
- Aggressive downshifts during deceleration
- Higher RPM shift points
- More responsive kickdown behavior
- Slight "bark" between gears during hard acceleration
Signs of Actual Problems
- Harsh engagement from Park to Drive/Reverse
- Jerking even at light throttle in Sport mode
- Unpredictable or inconsistent shift behavior
- Grinding or clunking sounds accompanying shifts
- Significant jolt during normal commuting in Sport
- Behavior significantly worse than when new
Common Causes of Abnormal Jerking
Adaptive Learning Corruption
The transmission adapts to driving style. Corrupted learning data can cause excessive firmness as the computer overcompensates.
Transmission Fluid Condition
Degraded fluid affects clutch engagement smoothness, even in Sport mode where some firmness is expected.
Software Calibration
Some Sport mode calibrations have been refined through software updates. Outdated software may exhibit harsher behavior.
Valve Body Issues
Mechanical problems in the valve body cause erratic pressure delivery affecting shift quality in all modes.
Repair Costs
| Repair | Parts | Labor | Total |
|---|---|---|---|
| Software update | $0 | $100-$175 | $100-$175 |
| Adaptive reset | $0 | $75-$150 | $75-$150 |
| Fluid exchange | $150-$250 | $150-$250 | $300-$500 |
| Valve body service | $500-$900 | $500-$800 | $1,000-$1,700 |
When to Seek Service
If jerking in Sport mode is significantly worse than when the car was new, or if harshness extends to Normal/Comfort modes, diagnosis is warranted. Some firmness in Sport mode is by design.