Is300 2JZ

I’ve been looking at buying a 2003 IS300 as my first car and wanted to get some real opinions from people who own or have owned one. My main concerns are reliability and gas mileage since I’ll be driving it daily around Southern California. How has the 2JZ-GE held up long term and what are the most common issues to watch out for at this age and mileage? What are you actually getting day to day for mpg city and highway? And is there anything specific I should inspect when I’m looking at one of these cars before pulling the trigger on one with my budget around $8k? Any advice is appreciated.​​​​​​​​​​​​​​​​