Why do my car run hard also why it drink so much gas

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! Your QX60 is acting thirsty and stubborn, huh? When a car runs rough and guzzles gas like there's no tomorrow, it could be a few things. First off, it might be due to dirty or failing spark plugs or coils, which cause misfires and make your engine work harder. Another suspect could be a failing mass airflow sensor or oxygen sensor, which can mess with your air-fuel mixture and lead to poor fuel economy and rough driving. A diagnostic scan would be a great next step to narrow down the exact culprit without the guesswork. If it's barely moving forward, it could be locked up brakes, but you'd most likely smell burning if that was the case. I'd get it to a shop or dealer ASAP to have them pull trouble codes and give it a once over. If you need any further advice or if you'd like any help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554!