Test Summary
Test Vehicle
Range Rover Sport Autobiography P525
Engine
V8 5.0L Supercharged
Test Date
October 25, 2025
Route
274 miles from Los Angeles to San Francisco, CA (I-5 / I-405)
Energy Contained in 1 Liter of Water
When one liter of water is separated into hydrogen and oxygen via electrolysis, it yields approximately 111g of Hydrogen. With a lower heating value (LHV) of ~120 MJ/kg, this translates to:
~13.3 MJ or ~3.7 kWh of chemical energy per liter of water.
The 360ES-PEM system turns this abundant resource into a range extender. The added oxygen improves combustion, while hydrogen's faster flame speed ensures a more complete burn, converting water into additional miles of efficiency.
Efficiency Results
Baseline
17.2 MPG
With 360ES-PEM
26.8 MPG
+55%
Relative Fuel Efficiency Improvement
Baseline Dashboard Reading
360ES-PEM Active Reading
Savings on LA → SF Trip (274 miles)
Baseline Fuel Used
15.9 gal
w/ 360ES-PEM
10.2 gal
Gallons Saved
5.7 gal
Range Gain
+229 mi
"A single 23.8-gallon tank, which would normally provide 409 miles, can now achieve 638 miles — more than enough for a round trip from LA to San Francisco without refueling."
Additional Benefits & Technical Foundations
Greater Range Per Tank
Optimized combustion allows more miles with the same fuel volume.
Increased Power & Torque
Faster, more complete combustion converts more chemical energy into mechanical power.
Lower Engine Temperature
More efficient combustion produces less residual heat, reducing thermal stress.
Reduced Emissions
More complete combustion reduces CO₂, NOx, and particulate emissions.
Oil and Maintenance Benefits
Fewer carbon and unburned fuel residues keep oil cleaner and extend component life.
Conclusion
The 360ES-PEM system demonstrated a remarkable +55% increase in fuel efficiency on the Range Rover Sport. This test validates that integrating the H₂+O₂ generator transforms high-performance consumer vehicles into more efficient, powerful, and sustainable platforms.
Key results for the 274-mile trip include:
- Fuel Saved: ~5.7 gallons
- Extended Range: +229 miles per tank
- Practical Impact: Lower cost per mile, greater autonomy, and a reduced environmental footprint without sacrificing performance.
In short, the 360ES-PEM system delivers greater autonomy, lower expenses, and a higher return on every mile traveled for the discerning consumer.
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