The BMW X5 35d, particularly the 2012 model, is lauded by owners for its robust performance, surprising fuel economy for its class, and overall reliability. Many drivers appreciate it as a comfortable daily driver that can handle long distances with ease. However, like many modern diesel vehicles, the emissions control systems can present some challenges over time. This leads many owners to consider solutions like a 2012 Bmw X5 35d Delete Kit.
One of the frequently mentioned issues with the 35d, and similar diesel engines, revolves around its emissions components. The AdBlue system, for instance, which uses Diesel Exhaust Fluid (DEF) to reduce NOx emissions, can experience problems. The AdBlue tank temperature sensor is known to be susceptible to failure due to the corrosive nature of the fluid. Furthermore, the plastic AdBlue tanks themselves can become brittle over time, sometimes necessitating a complete tank replacement even when only the sensor is at fault.
Another area of concern is the Exhaust Gas Recirculation (EGR) system. Designed to recirculate exhaust gases back into the intake to lower combustion temperatures and reduce NOx, the EGR system can lead to significant carbon and soot buildup in the intake manifolds and cylinder head. This accumulation of “gunk,” as some owners describe it, can require periodic professional cleaning, typically every 60,000 to 90,000 miles, to maintain optimal engine performance. This issue is not exclusive to BMW, affecting many modern diesel engines across different manufacturers.
For owners seeking to mitigate these potential emission-related issues, a 2012 BMW X5 35d delete kit presents itself as a compelling option. Deleting the emissions system, often involving components like the EGR, Diesel Particulate Filter (DPF), and Selective Catalytic Reduction (SCR) system (which includes the AdBlue system), can lead to several perceived benefits. Owners often report improvements in fuel economy, sometimes as much as 10% or more, and noticeable gains in horsepower, in the range of 70 to 100hp. By removing these systems, the engine can operate more freely, unburdened by the restrictions imposed by emissions regulations.
Beyond performance enhancements, a delete kit can also address the reliability concerns associated with the factory emissions equipment. By eliminating components prone to failure, such as the AdBlue system and EGR system, owners can potentially reduce future maintenance costs and downtime. However, it is crucial to acknowledge the legal and environmental implications of removing emissions control devices. In many regions, tampering with or removing these systems is illegal and can result in fines or failed emissions testing. Furthermore, while a 2012 BMW X5 35d delete kit might offer performance and reliability benefits, it also means the vehicle will be emitting higher levels of pollutants into the environment.
Aside from emissions systems, 2012 BMW X5 35d owners should also be aware of other common maintenance items. Tire wear can be an issue if wheel alignments are not performed to precise specifications. BMW’s factory alignment tolerances are quite broad, which can lead to uneven tire wear, particularly on the inner edges. Ensuring a shop performs a detailed alignment to exacting specifications can significantly extend tire life. Routine maintenance items such as brakes and batteries are also typical wear components that will need replacement over the vehicle’s lifespan. Thermostat replacement is another maintenance item to consider, as a failing thermostat can cause the engine to run cooler than optimal, potentially leading to other issues like glow plug failures in diesel engines. It is often recommended to replace the water pump concurrently with the thermostat on E70 X5 models as preventative maintenance due to their accessibility when performing thermostat work.
In conclusion, the 2012 BMW X5 35d offers a great blend of performance, comfort, and efficiency. While emissions system issues are a common concern for modern diesels, a 2012 BMW X5 35d delete kit can be considered as a solution to enhance performance and potentially improve long-term reliability by removing these systems. However, it is essential to weigh the benefits against the legal and environmental consequences before making a decision. Owners should also stay proactive with general maintenance to ensure the continued enjoyment and longevity of their BMW X5 35d.
