Hello, all.
I am in dire need of assistance!
I recently purchased a 2016 LR4 and I drove it for a while and it started running rather rough!
I took it to a local mechanic, and he told me that the vehicle is misfiring. He performed a thorough check and informed me that cylinders 4 and 5 are misfiring. He is unable to check the wiring, the computer, or reprogram the computer. I live in a small town where Land Rover mechanics are not accessible.
Any advice would be welcomed.

By the way, here are the codes that were detected:
P0270-13
P0300-00
P0304-00
P0305-00
P1315-00

Again, thanks in advance for any advice or suggestions.