
Originally Posted by
Skooter
Skoda Octavia Scout 2.0 TDI PD AWD, probably the same running gear as the Allroad? Haven't bothered with the calculator 'actual' but MFD read 5.3L/100 from Melbourne to Adelaide and identical on the way back (856km on 53L ... what's that?). Lots of flat chat overtaking B-Doubles and cruising at actual 105kph in Vic and 115kph in SA. Took off the bike racks for the trip.
Towing a trailer with canvas cover like a parachute, two bikes on roof, 4 people and loaded up from Melbourne to top of Mt Buffalo via the Hume cruise control set to 114kph (actual) ... 8.5L/100 on the MFD - I was a bit disappointed!
Best seems to be cruising steady at 50-70kph; ridiculously good fuel econ.
Allroad is 2.5 V6 AWD, so not quite. 
I've noticed the Octy 2.0TDI loves 80km/h cruising... So, roadwork zones! (Read: M5 Sydney)
My overall average is 6.2L/100, best ever is 5; worst is around 8. But the 8 was with two heavy driving days (track day then AuSkoda cruise)
If I hadn't filled the tank after the sunday cruise and just let it go 'till it actually needed filling it would have probably been an average 6.5 tank lol
Also - I boost it. A lot. 
Terrence Fuel-up Log | Fuelly
2012 Octavia vRS TDI. Darkside big turbo, 3bar tune, other stuff. 200kW/650Nm.
1990 Mk1 Cabrio. 1.9 IDI w/ 18PSI.
1985 Mazda T3500 adventuremobile. 1973 Superbug. 1972 Volvo 144 in poo-brown.
Not including hers...
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