Audi A8 1.2 E-TDI luxury fuel sipper

[Jyden]

Nuts! - but will follow with interest....

[Arragonis]

Any updates or plans on this ?

[Vekke]

Project is officially started .



Weight of those 15" wheels 5.8 kg per piece.

Aerodynamic & rolling resistance, power & MPG calculator - EcoModder.com

Rough calculations of the project first with only diesel powertrain.
On lupo 3l you can reach 3 liters at 100 km/h speed with 1.2 TDI.
Lupo weights 950 kg with driver and A8 target weight 1500 kg = 36,7% difference in weight every 10% increase is 2-4% on highway --> max 14,7% higher fuel consumption
Lupo 3l CdA 0,29*2,0=0,58 Audi A8 modded 0,23*2,2=0,506 = A8 is 12,7% better so 12,7% less fuel consumption on highway speeds

That means I should try to keep the gear ratios pretty close to same as in my Lupo 3l gearbox. That is one reason behind that I will first test 195/65R15 tires. Other is weight savings and ofcourse the frontal area gets smaller.

[euromodder]

Errr .... the online wheel shops that I checked, give 16" as the smallest wheels on the A8 (up to 10/2002 - and17" after that).

Are you sure the 15" will fit ?

[Vekke]

Sure they will fit but propably not with stock brakes. Lighter car needs smaller brakes...

[euromodder]

Originally Posted by Vekke

Sure they will fit but propably not with stock brakes. Lighter car needs smaller brakes...

In that case ...


If you need any help with translations (Dutch / French / German) when searching for an A8 in Europe, just let me know.

[Vekke]

What I am looking for is:
- Audi A8 D2 2.5 TDI with manual transmission- must have
- Price between 1000-2500€ from europe. (Engine failure ones for 1000€)
- Miles does not matter as car is rebuild mostly.
- Outer body panels should be in mint condition so not crashed cars that arent repaired properly
- Learher interior
- Preferred color silver

[NachtRitter]

Originally Posted by Vekke

Project is officially started .

Wow! The car must be really light... there is nothing to it!

[euromodder]

Though call ...

Autoscout

[HypermilerAX]

You will also gain with the better rolling resistance of 15" tires.

0950 kg / Cr 0,0079 / CdA 0,580 = 9,91 hp at 90 km/h
1500 kg / Cr 0,0066 / CdA 0,506 = 9,77 hp at 90 km/h

It can only be better at higher speed with better CdA.