Unsure on the reliability, but i would make sure you give it a full health check before.
The usual checks ie tyres, oil/brake/coolant changes and maintenance up-keep are good signs of care.
also make sure the DSG has been serviced, with 87000 miles that should have had its oil changed twice! I do know the DSG is more robust than a manual, if treated to new oil regularly.
Unsure if it has a front diff, again may need a service or two!