A CNG cylinder often gives early warnings before a serious issue develops, and spotting these signs on time can prevent major accidents. Reduced mileage, unusual gas smell or fluctuations in pressure are some of the first indicators that the cylinder may be losing its strength. Visible corrosion, dents or faded markings also signal internal wear that cannot be ignored. If your cylinder has not been tested for three years, it automatically becomes due for inspection under safety guidelines.

Ignoring these signs can increase the risk of leaks or bursts, especially during refueling when pressure levels rise. Hydrotesting helps identify internal weaknesses more accurately than surface checks and ensures your cylinder remains legally compliant. Vehicles with well-tested cylinders run smoother, consume gas more efficiently and stay dependable for daily use. Timely testing protects both the vehicle and the people who depend on it, making it a vital part of safe CNG ownership.