Yet possible engine failure is exactly why GM is recalling a small number (fewer than 600) of 2010 Cadillac SRX crossovers with the turbocharged 2.8-liter V6 engine. When filled with low-octane (i.e., regular) fuel and driven hard, preignition may be induced in the engines of these vehicles. Preignition produces a knocking or pinging sound from the engine.

It gets worse, according to the National Highway Traffic Safety Administration:
"If the vehicle continues to be driven after the onset of this noise, a connecting rod or piston may break, resulting in engine damage, and perhaps engine failure, which would disable the vehicle, increasing the risk of a crash."

The recall is slated to start June 11, when dealers will contact owners to schedule a reprogramming of the engine module. Owners can contact Cadillac at 866-982-2339 until then.