Answer
Oct 23, 2019 - 03:25 AM
Hi there
Both the TDI and TSI Tiguans are very capable and desirable vehicles, so it's easy to understand why you can't decide between these two - especially because they cost roughly the same.
However, the TSI's power advantage will be difficult to overlook, while the TDI will only really make sense if you plan on using the vehicle predominantly for long-distance trips. Around town, the difference in consumption may well be smaller than you'd imagine, with the diesel's efficiency advantage only becoming really notable on the open road.
In the long term, neither of them has any clear-cut advantage in terms of maintenance costs, though servicing on the TSI will be less expensive once the service plan has expired. The TDI will likely need attention to its injectors at some point (after about 150 000 km), while the TSI won't have this issue. They both have turbochargers and all manner of emission-control equipment, though, which would likely require attention before you've hit the 200 000 km mark on either of them.
In the end, it depends on the usage of the car: long distance driving will see the fuel efficiency of the TDI save you a pretty penny (which will then eventually go into servicing and maintenance), but the TSI will be nicer to use and a lot more refined day to day. And it's quite noticeably quicker as well... so that means that we'd probably recommend the TSI over the TDI for most users.
Hope this helps!
The AskAutoTrader Team
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