2006 Subaru Outback • 4 cylinder AWD Automatic •

Enter your question.A 2006 Outback Sport with 100,0000 miles. 90% highway miles. How critical
is timing belt replacement and how soon?
Don Meyer
November 15, 2010.

I personally recommend every 80K. However, you should follow the manufacturer's recommendations. To be honest, I would recommend replacement. If it breaks, I believe it is an interferance engine. What I mean by that is there isn't enough room in the combustion chamber between the piston and valves. What happens is the piston hits top dead center and if a valve is open it will get bent. Then you end up with major engine problems.