30,000km without a service... Doesnt sound good.

Best thing to do now is to take it to a workshop and get a full mechanical inspection. EVERYTHING checked with a fine toothed comb. If necessary get a 200K service.

Expect to spend in excess of $1000 for a 200K service.

Get it done ASAP though.

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RS Liberty - Because WRX's are only good for parts...