Subaru Forester 2020 Problems

The short answer is no, the extra cost is not justified in a vehicle that does not require premium unleaded. While some premium fuel products do contain detergents to help keep an engine internally clean (which is the basis of the claim you heard) the major difference (and the reason PULP costs more) is to do with the octane rating of the fuel.

Put simply, engines in a higher state of tune require this higher octane rating to produce their potential and well as avoiding internal damage. Your Subaru, meanwhile, is tuned to be quite happy on standard 91 RON ULP, and filling it with the more expensive premium brew is a waste of money. You might gain a small improvement in performance and/or economy, but not enough to offset the higher per-litre price of PULP, and probably not enough to even notice.

The noise could be from the electric motors themselves or in the gears and cogs that physically move the mirrors to their new positions. Pulling the mirror apart and lubricating these mechanisms might help reduce the noise and may even fix the one mirror’s reluctance to move through its full range of positions.

As far as warranty goes, the situation is a bit complicated in that the dealer may examine the noise and decide that it’s not abnormal. But what you should do before the warranty runs out is have the car examined and the problem logged at dealership level. That way, if anything goes wrong as a result of the problem, even if it’s beyond the warranty period, you have what’s called a pre-existing condition whereby the problems is Subaru’s to fix because it existed while the warranty was still current, even if it wasn’t fixed at that time. The point being that the dealer can’t delay a fix reported during the warranty period and then claim that the vehicle is out of warranty and refuse to fix the problem.