Mass Airflow Sensor for BMW X7 — Price, Symptoms & Replacement Guide
Category: Engine | Failure Severity: Medium | Replacement Cost in India: ₹5,000–₹20,000
What is the Mass Airflow Sensor?
MAF sensor measures air entering the engine for optimal fuel injection.
How the Mass Airflow Sensor Works
Sends airflow data to ECU for precise fuel-air mixture.
Why the Mass Airflow Sensor is Important
Ensures fuel efficiency and smooth engine performance.
Common Problems with the Mass Airflow Sensor
- Dirty sensor
- Failure
- Incorrect readings
Warning Symptoms of a Failing Mass Airflow Sensor
- Poor mileage
- Engine hesitation
- Check engine light
Common Causes of Mass Airflow Sensor Failure
- Dust
- Oil contamination
- Electrical fault
Impact on Car Performance
Can reduce fuel efficiency by up to 25%.
DIY Fix Guide — Step by Step
- Clean MAF sensor
- Check wiring
- Scan for error codes
- Replace faulty sensor
- Use proper air filter
Maintenance Tips
- Clean periodically
- Replace air filter
- Avoid contamination
Mass Airflow Sensor Replacement Cost in India
Expect to pay between ₹5,000 and ₹20,000 for genuine parts plus labour at an authorised BMW workshop. Local garages and aftermarket parts can be 20–40% cheaper but may compromise warranty.
Where to Buy Mass Airflow Sensor Online
Search trusted Indian car-parts retailers like Boodmo, Amazon India and Flipkart for genuine and OEM-grade Mass Airflow Sensor listings.
When to Replace the Mass Airflow Sensor
Replace if faulty readings persist.