VW T-Roc MAF Sensor Issues Causing Multiple Problems

Having dealt with similar issues on my T-Cross from 2020 with the gasoline engine, this sounds very familiar. I have some experience working with VAG cars and their common sensor issues. The symptoms you describe, especially the increased fuel consumption and engine stalling, strongly point to a mass air flow sensor problem. The incorrect air-fuel ratio caused by MAF sensor failure matches these exact symptoms. My workshop first ran a diagnostic scan which confirmed the MAF sensor was sending incorrect readings. They cleaned the sensor first, but this only helped temporarily. Eventually, they had to replace the entire MAF sensor unit. Total cost was 365€ including parts and labor. After replacement, the problems disappeared completely. The engine ran smoothly again, fuel economy returned to normal, and the check engine light stayed off. To help provide more specific advice for your case, could you share: Your exact engine size, Current mileage, How long the check engine light has been on, Whether the problems started gradually or suddenly, If any recent maintenance was performed This information would help determine if your case is similar and whether you might need additional diagnostics beyond the MAF sensor check.

After my last service at 130617km, they did actually find several problems like this. The air filter was completely clogged, which led to incorrect mass air flow readings. The poor air-fuel ratio caused my engine stalling and increased fuel consumption. My mechanic first cleaned the mass air flow sensor to save costs, but it did not fix the check engine light. The full MAF sensor replacement and new air filter cost me 410€ total. All symptoms disappeared afterward and engine performance returned to normal levels. This sounds really similar to your case, so I would definitely get the MAF sensor and air filter checked. The diagnostic codes will help confirm if we had the same underlying issue.

The repair experience on my T-Cross matches yours exactly. Having a clogged air filter combined with MAF sensor failure is actually quite common with these engines. The air intake system becomes compromised, leading to those exact symptoms you described. When my check engine light first appeared, I also tried the cheaper solution of cleaning the MAF sensor. But like in your case, this was just a temporary fix. The sensor failure was already too advanced. The full repair with both MAF sensor and air filter replacement totally resolved my engine stalling and high fuel consumption issues. My repair cost was slightly lower at 365€, but prices can vary. The important thing is the problem got fixed properly. Since getting the repair, I now make sure to change the air filter at recommended intervals to prevent future MAF sensor issues. These components work together in the air intake system, so maintaining both is crucial for proper engine performance. Good to hear your T-Roc is running well again. This repair combination seems to be the right solution when these specific symptoms appear together.

Thanks for sharing your experience and repair outcome. After my last service at 130617km, they identified several issues matching what you described. The root cause was indeed a heavily clogged air filter leading to incorrect mass air flow readings. The poor air-fuel ratio explains the engine stalling and increased fuel consumption I was experiencing. Just like in your case, my mechanic first attempted cleaning the mass air flow sensor to reduce costs, but this did not resolve the check engine light. The complete repair with new MAF sensor and air filter installation cost 410€ total. Since then, all the symptoms have disappeared and the engine performance returned to normal levels. The similarities between our cases are striking, so I definitely recommend others with these issues get both their MAF sensor and air filter checked. The diagnostic codes should confirm if they have the same underlying problem affecting the air intake system.