Octavia 1.4TSI is this too high mileage?

Hi all,

I have a budget of up to around 8k for an Octavia Estate 1.4 TSI. This generally gets me a mk2 but I have found a mk3 with the upgraded 138bhp engine which gets into my budget range because it has around 50,000 miles on the clock. I'm thinking this is probably a better bet than an older model with lower mileage. Or should I be concerned at that mileage? Its a 2013 model and my mileage would be fairly low but I plan to keep it a long time. I'm used to diesels which have a reputation for lasting longer, but I guess I'm concerned these small turbo engines may not. The car I'm looking at has a full skoda service history.

Any thoughts?