How accurate is the Challenger PC speedo?
A recent check compared to my GPS is
Challenger Speed 100kph GPS 93kph
Challenger Kilometers travelled 93.4kl GPS 92.1kl
Obviously two different methods are used to calculate the difference of speeds and kilometers travelled. So the question is which method is used to calculate the fuel economy and distance available?
A recent check compared to my GPS is
Challenger Speed 100kph GPS 93kph
Challenger Kilometers travelled 93.4kl GPS 92.1kl
Obviously two different methods are used to calculate the difference of speeds and kilometers travelled. So the question is which method is used to calculate the fuel economy and distance available?
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