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However, certain times of the year, depending on weather conditions, Hydrid Buses get the same 2.5 MPG as their diesel counterparts. Generally, a Hybrid Bus costs $150,000 more than a conventional bus, and has to be scrapped after a life span of 12 years.owever, certain times of the year, depending on weather conditions, Hydrid Buses get the same 2.5 MPG as their diesel counterparts. Generally, a Hybrid Bus costs $150,000 more than a conventional bus, and has to be scrapped after a life span of 12 years.
Alvin ISD representatives noted the low fuel cost and lower maintenance costs as considerations for its propane school bus use. The school district estimated its annual fuel cost savings with propane to be about $330,000, or just under $3,000 per propane bus per year.Alvin ISD noted that the maintenance costs for the propane buses were lower overall than for the diesel buses.he diesel buses provided by Alvin were older buses with higher maintenance costs; the increment of $0.06 per mile between the Gloucester propane and diesel buses was used, because discrepancies in bus vintage would artificially increase the maintenance cost savings (old diesel buses versus new propane buses).