The arrival of the 2015 Golf TDI, also known as the MK7 Golf or MKVII Golf, at our dealership marked an exciting moment for us at cardiagxpert.com. It’s noteworthy that these new Golf and GTI models are now manufactured in Mexico, a change reflected in the VIN starting with the number 3. This seventh generation platform introduces several technological advancements.
These advancements include a new series of engines, the Modular Infotainment System (MIB), proactive occupant protection, and selective driving modes (exclusive to the GTI). However, our focus here is primarily on the TDI variant. As part of our routine Perfect Delivery Inspection (PDI) on new arrivals, we get a hands-on opportunity to examine the latest innovations and, from a mechanic’s viewpoint, assess the practical implications of these changes, especially those that might impact maintenance and repair procedures.
Key Changes in the 2015 Golf TDI for Mechanics
Let’s delve into some of the significant updates observed on the 2015 Golf TDI that stand out from a service and repair standpoint.
Streamlined AdBlue Refilling
One notable change is the introduction of AdBlue, or diesel exhaust fluid, to the Golf TDI, a feature already present in models like the Touareg and Passat TDI for several years. What’s particularly interesting is the relocation of the AdBlue filler. Volkswagen has thoughtfully positioned it adjacent to the fuel nozzle.
2015 Golf TDI Engine Bay: A mechanic's view of the new diesel engine layout and key components for maintenance.
This shift is a welcome improvement. Instead of potentially spilling AdBlue in the trunk area, technicians now have a more convenient and accessible filling point, much like refueling. This design simplifies the AdBlue replenishment process during maintenance, eliminating the need to move items in the trunk to access the filler. The distinct design of the fillers also minimizes any risk of misfilling.
Oil Filter Location: A Mechanic’s Challenge
A more unexpected alteration is the oil filter placement. For the first time in our experience with Volkswagen TDIs, the oil filter is no longer situated at the top of the engine. While one might anticipate a move to a more easily accessible location, the reality is somewhat different.
The oil filter has been repositioned to the bottom of the engine. While bottom-mounted filters aren’t inherently problematic, in the 2015 Golf TDI, its accessibility is somewhat compromised by surrounding coolant hoses. This new location may present a slightly greater challenge during oil changes compared to previous top-mounted designs, potentially requiring extra care and maneuvering to access and replace the filter efficiently.
Water-Cooled Charge Air Cooler
Another modification worth noting is the integration of a water-cooled charge air cooler in the 2015 TDI. This feature aligns the Golf TDI with models like the TDI Passat, which already incorporated this technology. Water-cooled systems can offer enhanced temperature regulation for the intake air charge, potentially contributing to improved engine performance and efficiency.
Conclusion: A Promising Platform
Overall, the 2015 TDI Golf, alongside the GTI, represents a robust and technologically advanced platform. From a mechanic’s standpoint, while some changes like the oil filter location present new considerations for maintenance, others like the AdBlue filler placement are clear improvements. We remain optimistic that the advancements in this generation address previous concerns related to diesel fuel and high-pressure fuel pump (HPFP) issues. Ultimately, long-term reliability and real-world performance will be the true indicators of success for the 2015 Golf TDI.
