With things leaking and falling apart and not running I'm not sure if I would call them great engines or great cars. Just my opinion. Also I mean I've barely ran two quarts of fuel through this thing. It's right out of break in. Possible broken or loose flywheel, leaking engine from the manufacturer, who knows what else is wrong with it. I'm also perplexed why if it needs a fuel filter it wouldn't come with one.