Let’s say Mary drives 12k per year on average and her 2012 ML-350 gasoline engine is getting on average 20mpg (city/highway) and Mary's sister Kathy ML-350 Diesel is getting 24mpg on average.
Schedule shows spending how much Mary and Kathy spend on fuel over 1 year;
12.000 miles per year.
Vehicle fuel economy (average) 20 mpg (GASOLINE)
For vehicle to go 12.000 miles it would need 600 gallons of fuel.
Regular; $3.50x600 gallons =$2.100
Premium; $3.60x600 gallons=$2.160
Super; $ 3.70x600 gallons=$2.220
Diesel; $3.80 Diesel fuel economy is 24mpg and it needs 500 gallons. $3.80 x500=$1900
Mary will spend $320 more on first year of driving, than Kathy and Mary would have to stop 30 times at gas pump vs. Kathy's 25 times.
Press; Diesel owner save thousands (University of Michigan study)
Fuel economy for the S-350 Diesel & S-550 Gasoline
12.000 miles per year
Difference in fuel economy is 6mpg (15mpg & 21 mpg)
800 gallons x $3.70=$2.960
571 gallonsx$3.80=$2.169 $791 per year savings
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