Hi, I recently test drove a Legacy B4 RSK and I noticed when I shifted into 3rd the engine lost most of it's power and bogged down making a large noise from the exaust. When I shifted to 4th the power came back (in spades). After a while of running the 3rd seemed to bog down less but it still happened.
Is this a known issue (gear ratios) or could it be a major problem.

Cheers