Last week, the all-new 2015 Golf TDI arrived at our dealership, marking the debut of the MK7 Golf. It’s interesting to note that these new Golfs, including the GTI, are now manufactured in Mexico. Seeing a VIN starting with ‘3’ certainly highlights this shift in production. This seventh-generation Golf platform introduces several technological advancements, including a new engine series, the Modular Infotainment System (MIB), proactive occupant protection, and, for the GTI, selectable driving modes.
However, my primary focus today is on the TDI variant. The arrival of a new model always means a Pre-Delivery Inspection (PDI), which for a mechanic like me, is the perfect opportunity to dive into the nuts and bolts and see what’s new, improved, or perhaps, more challenging. I tend to pay close attention to those design choices that might complicate future maintenance, like awkwardly placed oil filters or, yes, plastic oil pans – some things still sting!
Let’s get into some of the noteworthy changes I observed on this 2015 Golf TDI.
A detailed view of the 2015 Golf TDI engine bay, emphasizing the advancements in the new TDI diesel engine.
AdBlue System Introduction in the 2015 Golf TDI
For the first time in a Golf TDI, we see the integration of an exhaust fluid system, specifically AdBlue. While Touareg and Passat TDI models have utilized AdBlue for some time, its inclusion in the Golf is a new development. What’s particularly interesting is the placement of the AdBlue filler. Volkswagen has positioned it directly adjacent to the fuel nozzle. My initial reaction? I see this as a positive move. Instead of potentially spilling AdBlue in the trunk area, this location should streamline the refilling process and minimize mess. Plus, the AdBlue and fuel filler nozzles are distinctly different, reducing any risk of misfilling.
Oil Filter Location Change in the MK7 Golf TDI
Now, this was unexpected. In a significant departure from previous VW TDI designs, the oil filter in the 2015 Golf TDI is no longer located on the top of the engine. This is quite a shift, and my first thought was naturally, “Okay, they must have moved it to an easily accessible spot, right?” Wrong. They’ve relocated it to the bottom of the engine bay, and it’s now somewhat obstructed by coolant hoses. From a maintenance perspective, this new location might present some challenges during oil changes.
Other Noteworthy Changes in the 2015 Golf TDI
Beyond these key changes, the 2015 TDI also incorporates a water-cooled charge air cooler, a feature already present in the TDI Passat.
Initial Thoughts on the 2015 Golf TDI Platform
Overall, the new 2015 Golf TDI, alongside the GTI, appears to be a solid platform. I’m optimistic that Volkswagen has addressed the previous diesel fuel and high-pressure fuel pump (HPFP) concerns that have plagued earlier models. However, as always, only time will truly tell how these new systems perform in the long run.
