Pass on the Tiguan and go for a Mk6 GTI for similar money. Fun cars to drive. If you do go for a Tiguan, those TSI engines around that time are notorious for having timing chain issues due to poor design. Make sure the chains have been done using updated parts. Other than that, there are no real major issues you should look out for. Maybe check for leaks around the diverter valve as this can be a telltale sign that the turbo is on the way out. Can't comment on the Camry but Toyotas are generally quite reliable and reasonably priced when repairs are needed.