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Diesel vs petrol question
I drive a courier van, ford transit, manual 6 speed, diesel, 2.2 litre I think. Over a 480km trip, 90% at 100km/h - 60mph, it regularly gets 6.7-7.0 litres per 100km. My car, 3.5litre V6 Camry, petrol, 6 speed auto gets 7.4 litres per 100km on a good trip for the same road at the same speed... over many trips. Van has a far larger frontal area and is fairly brick shaped, has a bull bar too and Im pretty sure its heavier.
Why can the van do better than my car? I understand auto vs manual but there must be more going on, does diesel have far more energy per litre? I drive the van pretty hard but usually I am in no rush in my car.
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