Holding your current car is likely the smartest decision financially (I suspect you meant 180,000, not 18,000 kms?). That said, I traded in a BMW 1 series (with the sweet inline 6) after 7 years and it only had less than 35,000 kms. I was bored with it. I wish I could follow my own advice and kept it...at least from a financial perspective> That car was good for another 10 years with likely only maintenance costs. That said, I'm happy with what I have now.
If you decide to get a new car, the best choice will depend on your situation. If you're in the city and are not concerned about charging, then electric is likely fine. I don't expect electricity costs to go down, that said, gas prices aren't going down either! If you're in the country or have/want to drive where charging is more difficult, then a gas/diesel powered vehicle might be the better choice. I would strongly recommend not to buy a used electric vehicle. If you have to replace the battery, it is essentially the price of a low end gas powered car.
I will be the last person to get an electric vehicle, so I might not be the best guy to get advice from, lol! I am currently driving my last V-8 powered car (bought new in 2020), but she is a thirsty beast! I never complain about gas prices because I made my choice knowing that gas prices would never go down. My next car will likely be an all-wheel drive small to mid-sized gas powered car. Something I can drive all year round without having to take snow days off from driving (like I do now).
When I was trying to decide what to buy, I made a spreadsheet with all the vehicles I was considering, noting all the positive and negative points on what was important to me. I ended up with the least expensive car, but it checked way more boxes than the others that were quite a bit more expensive. I was lucky and got some money off for COVID and zero percent interest. If you need to finance, it might be better to wait until interest rates come down or until dealers offer interest rate deals.
Good luck with your decision!