Using Launch Control: Is It Hard on Your Car, Especially With Frequent Starts? Jalopnik Explains
How launch control works
Modern performance cars can combine impressive acceleration with comfort and safety features. The seventh-generation BMW M5, for instance, reached 60 mph in 3 seconds in Car and Driver testing, despite its weight as a plug-in hybrid sedan.
Launch control helps a car move off the line by managing engine speed and power delivery to limit wheelspin. In a combustion car, the system holds revs while the driver applies the brake, then sends power as the brake is released.
Repeated starts wear components
Every full-throttle launch puts substantial force through the drivetrain, axles and tires. Repeating that stress can wear the clutch, transmission and other drivetrain parts, which can be costly to replace.
Automakers warn owners about the consequences. BMW's M4 manual says launch control causes premature component wear, while Kia's Stinger manual warns that frequent use can heavily stress the transmission, engine and drive shafts. Both brands advise waiting until the break-in period is over.
Systems set limits
Some cars restrict launch control to protect components. The Kia Stinger disables it when transmission fluid is too hot, while BMW M cars may require a period of driving before another launch. Exhaust temperature limits the launch-control wait at the line to five seconds in the manual M3 and M4.
Lexus limits the number of launches in the LFA and advises owners to drive normally for about 10 minutes before trying again. BMW M, however, says the M3 and M4 have no lifetime limit on launch-control availability.
Power comes with risk
Launch control can make a marked difference to acceleration. In Car and Driver testing, the Porsche 911 Carrera GTS T-Hybrid reached 60 mph in 2.5 seconds using launch control, compared with 3.1 seconds when accelerating from a 5-mph crawl. Porsche Livermore describes the feature as built for thrills, rather than daily commuting.
A 2009 Nissan GT-R owner faced a $20,000 repair bill after launching with stability control off, according to Cars.com. Nissan later issued software that eased stress on the transaxle; a class-action case resulted in new transmission software for 2009 cars. By 2011, the GT-R launched at 3,300 rpm with controlled clutch slip and stability control on.
Key points
- Launch control itself is not described as harmful, but repeated full-throttle starts strain drivetrain parts and tires.
- BMW, Kia and Lexus provide warnings or limits intended to reduce wear and protect components.
- Launch control can significantly improve acceleration, but failures have occurred under unfavorable conditions.
- Disabling safety systems, launching with a cold drivetrain or modifying the engine can increase risk.