Last week at the dealership, we received our first 2015 Golf TDI, marking the arrival of the seventh generation, or MK7, Golf. It’s interesting to note that these new Golf and GTI models are now being manufactured in Mexico. Seeing a VIN starting with ‘3’, the country code for Mexico, is a first for me on this model. The MK7 platform also introduces a range of new technologies to the Golf lineup.
These advancements include a new series of engines, the Modular Infotainment System (MIB), proactive occupant protection features, and selective driving modes, although the latter is currently exclusive to the GTI model. However, my initial focus is primarily on the TDI variant. When a brand-new vehicle arrives, we conduct a Pre-Delivery Inspection (PDI). For a technician, this PDI is an excellent opportunity to examine the latest innovations and, quite frankly, identify aspects that might complicate future maintenance. I tend to pay close attention to design choices that could make my job harder, like awkwardly placed oil filters or, my personal frustration, plastic oil pans.
So, let’s delve into some of the notable changes I observed on the 2015 Golf TDI during its PDI.
Close-up of the new TDI engine in the 2015 Volkswagen Golf MK7, highlighting changes for the model year.
AdBlue System Introduction
For the first time in a Golf TDI, Volkswagen has incorporated an exhaust fluid system, commonly known as AdBlue. While AdBlue has been a feature in the Touareg and Passat TDI models for several years, its inclusion in the Golf TDI is a new development. What’s particularly noteworthy is the placement of the AdBlue filler. VW engineers have positioned it directly adjacent to the diesel fuel nozzle. My initial reaction? This is actually a practical improvement. Instead of potentially spilling AdBlue fluid in the trunk area, any minor spills will now be contained to the fuel filler area, which is designed for such occurrences. More importantly, this location means we no longer need to unload cargo to access the AdBlue tank for refills. Plus, the distinct designs of the fuel and AdBlue fillers minimize the risk of misfilling.
Oil Filter Location Change
This is a significant change that I honestly didn’t anticipate. For the first time in my experience working with VW vehicles, the TDI oil filter is no longer situated at the top of the engine. This relocation is quite unusual and unexpected for those familiar with previous TDI engine designs. Now, you might assume that Volkswagen has moved the oil filter to a more easily accessible location. Unfortunately, that’s not the case. The filter has been moved to the bottom of the engine, but it’s now somewhat obstructed by coolant hoses, potentially adding a step to the oil change process.
Additional Updates
Beyond these key changes, there are a few other differences worth mentioning on the 2015 Golf TDI. Notably, the TDI now features a water-cooled charge air cooler, a technology previously seen in the TDI Passat. This system helps to improve engine efficiency and performance.
Overall, my first impressions of the new 2015 TDI Golf, alongside the GTI, are positive. It appears to be a well-engineered platform. I am optimistic that the issues related to diesel fuel and high-pressure fuel pumps, which have been concerns in previous generations, are now resolved. However, as always, only time will truly tell the long-term reliability of these new systems.
