Having issues with my 2025 Nissan Altima.

Yesterday, 8/19/26, my car was running perfectly, I DoorDashed for a few hours last night, I’d say from 8pm-12am and everything was fine. Today, 8/20/26, I get in my car about to go to get a drug test done for this job I’m about to start next week when I try starting my car, it doesn’t start. The brake is immediately stiff and I can hardly press down on it, I turn the car off and try again, the car is struggling to start and is visibly shaking and making noises. I turn the car off once again, wait about a min and try one last time and this time she starts, I go get my drug test done and I come back home and just leave her there for the rest of the day. I also got an “Engine Malfunction” alert when I tried starting the engine after the drug test.

Fast forward about 6 hours later and this just happened a couple of minutes ago, I go outside and I want to see what’s going on. I press down on the brake and push the ignition and she starts but she visibly shook and out of the rear window I see smoke coming from my exhaust and I smell a burning odor, I immediately stop, put her in park and turned her off. I’m confused about what’s happening. The car only has 34k miles, I got it last month with 32k miles from Carvana. Any idea on what’s happening and what I should do? Yes, I do plan on going to Nissan or Firestone since that’s the in-network shop that they’re partnered up with. Yes, I got it inspected by both Nissan and Firestone when I first got her last month and they said there were no issues with the car.