I have an 05 2.0L 5speed. Over the years I have noticed some weird things when the car is low on fluids. When the oil needs to be changed it starts to make a high pitch whine when driving over 3000rpm. This is a very gradual change(a few weeks) that I don't notice until its gone. That's not much of an issue, its the low fuel that alarms me. Whenever I'm on the freeway and the fuel light goes on and it beeps, the engine seems to cut out for a second then go back to normal, making the car lurch a bit. This happens every time and has always happened. The other thing I notice when the fuel is low is that the engine seems to be a lot louder at higher rpm. Basically, the higher the rpm, the faster and louder the vrum vrum noise gets. When I fill, up most of the engine noise goes away, leaving a pleasant purr. So, is something wrong, or are beetles just fluid sensitive?