Our 84 Westfalia gets 10L per 100km - I'll let you do the conversion here
to get MPG:

The stats of the van to get this economy

Engine                  1986 Jetta GLI 1.8L 8V with 200,000+ km
CO                      0.5%
Fuel                    Petro Canada 87 Octane
Idle                    950 rpm
Timing                  3 BTDC at idle, 28 BTDC at 4500 RPM
Injection                       CIS
Compression Ratio       10:1
Engine speed            110 to 115 km/h
Tires                   195/75R14 at 40PSI fron and 48PSI rear

We usually try to keep the engine in the 3800 to 4000 rpm range - we find
it runs cooler (mid way between the cold line and the LED) that if we run
it at 3200 RPM (just below the LED).

At 11:25 AM 23/07/2000 -0700, Mark Drillock wrote:
>Don't believe everything you read. The aerodynamics of the Vanagon are
>not improved by engine conversions or mods. The MPG can certainly be
>improved but a claim of 25 MPG at 75 MPH puts all claims by that person
>under suspicion in my book. Come on out to Calif with such a Vanagon and
>we can drive together up and down I5 400 miles each way from San Diego
>to SF. We will check the odometer with mile markers and the speedo with
>a stop watch. If it gets a true 25 MPG over 800 miles at an average of
>75 MPH I will give you $500. If it gets less than 23 MPG you give me
>$250. Between those numbers we will call it a draw. This offer does not
>apply to Diesel engined Vanagons.
>
>Mark
>
>David Ricketts wrote:
>>
>> I was a little surprised to hear some of the MPG quoted with engine mods
>> and conversions.  I believe one person said he had 30mpg with a Bus and
>> someone else had 25mpg with increased horse power.
>>
>> Can anyone comment on MPG above 22mpg.  Are you getting it with a
>> conversion or modifications or stock.  I am dripping along at 16 mpg,
>> with a motor that doesn't have a lot of power.
>>
>> Thanks,
>>
>> David
>
>

-- David Marshall - Volkswagen Enthusiast - Quesnel, BC, Canada   --
-- 78 VW Rabbit, 80 VW Iltis, 80 VW Caddy, 84 VW Westfalia        --
-- 85 VW Cabriolet, 87 Audi 5000 Quattro, 88 VW Syncro Double Cab --
-- David's Volkswagen Home Page        http://www.volkswagen.org  --
-- Fast Forward Autobahn Sport Tuning  http://www.fastforward.ca  --
-- david@volkswagen.org (pmail) or vanagon@volkswagen.org (list)  --