Whenever someone considers installing an LPG system, the first question is always the same: "Is it actually safe?" It is a fair question. Gas sounds risky if you do not know what goes into a modern LPG setup. But once you walk through the actual protections, construction standards, and regulations, the picture changes completely. A car running on LPG can be driven every day, without restrictions, provided the system is properly installed and regularly maintained.
Tank construction and the explosion myth
The LPG tank is probably the strongest single component in your car. It is made from 3 to 4 mm thick steel and pressure-tested at 30 bar, while the system's working pressure is only 6 to 8 bar. That means the tank operates at less than a third of its test capacity every day. ECE R67 homologation requires the tank to pass crash simulations, vibration tests, and extreme temperature exposure before it can be installed in any vehicle.
The explosion myth originated in the era of improvised installations, when industrial cylinders with no safety valves were used. That has nothing to do with a modern system. Even under laboratory conditions, when a tank is directly exposed to flame, the safety valve begins releasing gas in a controlled manner long before pressure reaches a critical level. The result is a controlled burn of the escaping jet, not an explosion.
The multivalve and the 80% fill rule
Every LPG tank is fitted with a multivalve, a component that combines several safety mechanisms in one housing. The overfill prevention valve physically stops the tank from being filled beyond 80% of its volume. The remaining 20% serves as expansion space for the liquid phase as temperature rises. The excess pressure relief valve activates automatically if pressure exceeds the allowed limit for any reason, releasing gas safely into the atmosphere. The electromagnetic shut-off valve closes the gas flow the moment the engine is turned off, preventing any leaks while the car is parked.
These mechanisms are not optional extras. They are part of the ECE R67 specification, and without them a tank cannot pass homologation in any country.
What happens in a crash or fire
Crash tests show that the LPG tank routinely survives impacts that completely deform the bodywork. Side, rear, and frontal collisions tear through sheet metal, but the tank stays intact. In the event of a fire, the excess pressure relief valve releases the contents in a controlled way. LPG is heavier than air, so it disperses downward and dilutes quickly. Petrol, by contrast, pools on the ground and burns longer and more intensely. Statistically, LPG vehicles do not catch fire more often or more severely than petrol vehicles, and European insurance data confirms this. Insurance premiums for vehicles with a properly certified LPG system are no higher than for petrol-only cars.
How daily LPG driving affects the engine
Beyond safety, the most common concern is that gas "destroys the engine." With modern sequential injection systems of the fourth generation and newer, each cylinder receives a precisely measured dose of gas at exactly the right moment, just like petrol injection. The engine does not experience any different kind of stress.
The only real difference involves valve seats. Gas burns at a slightly higher temperature than petrol, so on certain engines with soft valve seats, accelerated valve wear can occur. The solution is supplementary lubrication, most commonly a FlashLube system that doses a small amount of additive into the intake manifold. But this does not apply to every engine. Newer engines with factory-hardened valve seats require no additional protection at all.
At our workshop, when we install an LPG system, we check the engine specifications and tell the owner exactly whether their engine needs FlashLube or not. Gas actually burns cleaner than petrol, so engine oil becomes contaminated more slowly and the exhaust system lasts longer. Spark plugs wear slightly faster because gas requires more ignition energy, but that is routine maintenance, not engine damage.
Ventilation, garages, and underground parking
One of the most frequent questions is "Can I park in a garage with LPG?" In most European countries, including Bosnia and Herzegovina, vehicles with a properly functioning and certified LPG system are allowed in all garages and underground parking facilities. The key word is "properly functioning." A system that does not leak is completely safe in an enclosed space. The electromagnetic valve on the tank, the valve on the reducer, and the valves on the injectors close every possible leak path when the engine is off. Even when a car heats up from the sun during summer, the safety valve on the tank ensures pressure stays within permitted limits.
If you notice the smell of gas in or around the vehicle, that is a signal that something needs checking. LPG itself is odourless, but an odorant (mercaptan) is added precisely so that even the smallest leak can be detected immediately. Do not ignore that smell. Bring the car in so we can inspect the system, because that is exactly the kind of minor issue we prevent with a regular LPG service.
Regular maintenance as a safety requirement
All the protections we have described work under one condition, that the system is regularly maintained. Hoses have a service life, seals dry out over time, and filters get clogged. None of this means the system is poorly engineered, just that it is a mechanical assembly requiring attention, like every other part of a car.
An LPG service once a year, with a leak test on all connections, filter replacement, and injection calibration, keeps the system in a state where all factory safety features remain fully functional. Likewise, if you notice the car responding differently on gas, losing power, or running unevenly, do not wait for the problem to escalate. Clean fuel matters too, because poor-quality LPG can damage components faster than normal use would wear them out.
Auto Gas Gaga handles complete LPG diagnostics, installation, servicing, and repairs. If you have any doubts about the condition of your LPG system or are considering an installation, book an inspection or contact us directly.