Its output ratio was quite astonishing, able to beat comparative figures from several supercar engines. Clearly, that didn't make the engine more powerful than a modern supercar, and a Corvette ZR1 or McLaren 750S would still disappear quickly down the road. In fairness to modern supercar engines, it's also important to understand what their manufacturers have to face. Modern supercar engine builders must deal with requirements that their FQ-400 counterparts never faced on the same scale. Those modern engines must pass current emissions rules, support advanced diagnostics, work in multiple climates, and cope with much larger production runs.