Issue with my Car.

[FiftyCal]

If you heard a really loud knocking sound then that means you really screwed up the engine. If it doesnt show oil on the dipstick then it might possible just be a quart low which isn't bad, but don't keep driving it like that.

[Arron]

I can hear a rattling coming from underneath my car, it's more on the drivers side rather than the passenger's side. I'm getting weary now :/

[tdi]

Does it change depending on speed/revs? Does it sound like an engine noise or something coming from the suspension etc?

[Arron]

It doesn't happen all the time, but when it does it happens when I go from 2nd to 3rd gear. I hear thatscreechingnoise coming from the engine/tyre (can't quite locate where the noise is coming from). My friend said it's either the cambelt or the bolts of the wheels?

[tdi]

Screeching noise? Just when you change gear? If it's when you take your foot off the clutch, it will be the clutch. Fanbelt squeak can be intermittent but it's hard to tell without hearing it.

[FiftyCal]

Well if you hear squeeling from the engine then it could be your belts are loose unless you're chirping the tires from 2nd the 3rd gear.