Its definitely worth it if you take care of your Subaru it will last a long time, I've had issues here and there but I don't regret investing my money and time to fix these problems. I drive a 97 legacy outback 2.5 with 300k and she's still running great, I just perform regular tune ups when I change my oil (I just use conventional) and the only issues I ever have pretty minor. I hope my post helps you realize your car is a good investment.