"We are satisfied that the findings of our internal investigation exclude the car as a factor in the accident, " Marussia team principal John Booth said in a statement.
Factor in Rubens Barrichello's frightening accident, when one of his rear wheels flew off at 180mph, and you wonder how Jean Todt, Ferrari's team director, managed to limit himself to "disappointing" as his word for the weekend.
The auto insurance industry has long maintained that deadbeats are accident-prone and has pushed state legislatures to allow credit scores to be a bigger factor in setting auto premiums.
Onshore studies show that around 60% of major accident incidents are related to technical integrity, and of these half have ageing as a contributory factor.