Actually, there's one on Autotrader now, except it's a panel van, so no-go for my purpose (even if it's tempting!).
Auto Trader UK - MERCEDES-BENZ VITO 123 "Extra-Long" - 230 bhp, 3.7 litre V6 Petrol Automatic! Loads of EXTRAS - Only 35k miles 3700cc
And yes, you're right about the 3.5l vs the 3.7l - I was under the impression that the petrol V6 was marketed as a 3.5 despite the 3.7 volume. Closer inspection in the Viano broschure confirms a 3,498cc capacity.
Power is 258bhp and 340Nm, 9.3s 0-62mph.
The reason for my speculation into the petrol car is purely financial. The 2.2l diesel I tried in Milton Keynes was priced at about £23,000, but I've now spotted a fairly similarily specced 3.5l one on Autotrader.
Auto Trader UK - Mercedes-Benz Viano 3500 cc 3.5 Ambiente 5dr Tip Auto [258]
2008 08 Reg Mercedes-Benz Viano 3500 cc 3.5 Ambiente 5dr Tip Auto [258]
Price: £18,488
Features:
* 12,552 miles
* Automatic
* B lack Sapphire
* Petrol
* Estate
* 3500 cc
Full Description:
5 Doors, Automatic, Estate, Petrol, 12,552 miles, Black Sapphire, Side Sliding Doors, Half Leather, Rain & Light Sensors, Bluetooth Prep, Climate Control. £18,488
It's very similarily specced, and mileage is almost the same, but it's £4,500 cheaper. Sadly it's a shorty, so it's of very little interest to me, beside it's miles and miles away from me.
My spreadsheet told me that the price difference in fuel, between a 2.2l diesel and a 3.5l petrol over 50,000 miles is £2,200. If that maths adds up, that'd mean £2,300 worth of toy money for "the same car".
Also, in my current status I don't use the car for "day-to-day" transport, so I don't mind spreading the purchase price out on the fuel bill.
And I do like petrol engines.
Oh, and that Brabus is awesome, albeit over the top!
And, once again, huge thanks, BTB!!