I am quite a number maniac, I have an excel with all (ALL) costs of my Suzuki Grand Vitara.
I have the car almost 10 years now, and I spent almost as much money in buying the car as I spent in diesel.
My average consumption is 7.92 l/100km (diesel), or 35.7 MPG (Imperial) or 29.7 MPG (US) ... ("Jesus", I prefer the metric system!).
On motorways, and even worse on German motorways where I drive faster, I can reach easily 10 l/100 km.
The lowest consumption is around 6.75 l/100 km when I don't drive on motorways at speeds around 80 km/h.
I know the Grenadier will be about 12l/100 km (Petrol), and that is indeed a big difference. But if I decided I can afford the price, I knew it "had a price!".
I pretend to have a new Excel sheet with all my costs for the Grenadier, and will share the results here