Bob, thanks for that.
That guardian article really needs to consider the very reasonable option of replacing the Focus with a brand new Focus Diesel, which emits 99g/km (less than the Insight). It also has the major benefit it would save the buyer ~£5000.
That gets me these numbers for the three over 6 years (in kg, using 1.2 tonnes for the Focus manufacture, which is double the average reported in that article):
Focus - 1200+(79806*.099) = 9101kg or 9.1 metric tonnes
Prius - 4000+(79806*.089) = 11103kg or 11 metric tonnes
Insight - 2200+(79806*0.102) = 10340kg or 10.3 metric tonnes
and for making it more interesting - 10 years:
Focus - 1200+(133010*.099) = 14368kg or 13.4 metric tonnes
Prius - 4000+(133010*.089) = 15837kg or 15.8 metric tonnes
Insight - 2200+(133010*0.102) = 15767kg or 15.8 metric tonnes
It's amazing what happens when a diesel option is added.
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