Fuel Consumption - Automotive Customer Complaint Form
Customer Name/Company Date
Answer the following questions. Some questions require making an X next to the appropriate answer.
(1). What fuel mileage is expected? Expected
mpg
(2). What are the expectations based on?
Original mileage Other units in fleet Competitive engines
Previous engine owned Expectations only VE/VMS report
(3). When did the problem occur?
Since New Suddenly Gradually
(4). Did the problem start after a repair?
Ye s No
If so, what was repaired and when?
(5). Is the vehicle also experiencing a Driveability problem (Low Power or Poor
Acceleration/Response)?
Ye s No
IF ANSWERED YES, FILL OUT THE DRIVEABILITY/LOW POWER/EXCESSIVE FUEL CONSUMPTION
CHECKLIST AND GO TO THE ENGINE POWER OUTPUT LOW TROUBLESHOOTING SYMPTOM CHART.
(6). Is the problem seasonal? Ye s No
(7). Weather conditions during fuel consumption check?
Rain Snow Windy Hot Temperatures Cold Temperatures
(8). How is the fuel mileage measured? Tank
Trip Month Year
Hubometer Odometer
(9). Are accurate records kept of fuel added on the road? Ye s No
(10). Do routes vary between compared vehicles?
Ye s No
(11). Have routes changed for the engine being checked?
Ye s No
(12). What are the loads hauled compared to comparison unit? GVW
Heavier Lighter
(13). What is the altitude that the truck is operating at?
Below 10,000 feet Above 10,000 feet
(14). How much of the time is the truck spent idling?
Hours/day
(15). Is driver technique or operating practices affecting fuel economy?
High road speed: MPH
Operate at rated speed or above: RPM
Incorrect shift rpm: Shift RPM Torque Peak
Operate at a cruise speed: RPM
Believe compensating for low power
IF AFTER FILLING OUT THIS FORM IT APPEARS THAT THE PROBLEM IS NOT CAUSED BY VEHICLE
FACTORS, ENVIRONMENTAL FACTORS OR DRIVER TECHNIQUE, FILL OUT THE DRIVEABILITY/LOW
POWER/EXCESSIVE FUEL CONSUMPTION CHECKLIST AND GO TO THE FUEL CONSUMPTION EXCESSIVE
TROUBLESHOOTING SYMPTOM CHART.
This Page Can Be Copied For Your Convenience.
SectionT-Troubleshooting Troubleshooting Symptoms Charts
N14 Page T-111
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