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Old 09-01-2013, 03:32 AM   This thread is in the EcoModder Project Library | #1 (permalink)
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Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
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90 day: 104.94 mpg (US)

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Audi A8 1.2 E-TDI luxury fuel sipper

Now Tuneko/me have already proven on the lupo that you can improve 33% of the best fuel efficiency car up to date. This next project will show that you dont need to get the smallest car and strip its interior to get good fuel consumption figures.

Details: Audi - A8 - Audi A8 2.5 TDI Quattro (D2 Facelift 2) - Spritmonitor.de

At the moment best Audi A8 D2 driver gets that kind of fuel consumption figures and I have again bold plans to half those levels. In this project I try to keep all the necessary gadgets working and it still look pretty much the same.

Biggest mod will be engine which will be moved from my red lupo to this audi. It already makes 120 hp, but next target is 144hp from 1.2 TDI engine. That aint gonna be fast enough for me so car will get also huge electric motor to assist in accelerations.

Current setup and best results of this car:
- 1.2 TDI with 120 hp and 285 NM
- 1749V garret turbo
- Big intercooler
- 6 speed manual front wheel drive gearbox
- Weigth 1470 kg with full tank
- Yamaha R1000 radiator no fan
- power steering
- 205/70R15 tires
- smooth underside
- Grill block
- A4 B6 front brakes and suspension components
- Weight of the car 1470 kg with full tank

Best fuel consumption
3.92 L/100 km
59.97 mpg (US)
71.97 mpg (Imp)
80% at 100 km/h speed
15% at 90 km/h
and 5% in the city
cars onboard computers avg speed was 88km/h.

Acceleration 60-120 km/h -> 10.5 seconds

Some last calculations about the coming fuel consumption figures, looks promising. http://ecomodder.com/forum/tool-aero...ToStep=5-200-5




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Last edited by Vekke; 03-25-2016 at 04:39 AM..
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Old 09-01-2013, 03:44 AM   #2 (permalink)
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A 1.2 diesel in an A8?

Insane.

I look forward to it.
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Old 09-01-2013, 01:54 PM   #3 (permalink)
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Subscribing as I also dreamed about a smaller Audi engine in Hermann...
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Old 09-01-2013, 04:32 PM   #4 (permalink)
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Old 09-01-2013, 04:43 PM   #5 (permalink)
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If the latest 2.0 140 TDI unit is good enough for the latest A6 (which weighs pretty much the same as the A8 of that generation) then a 1.2 making 144 would be good enough too but maybe with far better MPG.

This is more or less what VAG is planning but maybe 5-10 years ahead IMHO. I can see a 3cyl 1.0 TDI being the norm and a 4 cyl 1.6 TDI being for premium models circa 2020.

And I just bought a 2.7 V6 TDI...
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Old 09-01-2013, 05:13 PM   #6 (permalink)
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What about the AWD drive train, will you use it, split it or replace it completely?

A setup where the Lupo engine and tranny drives the fronts and the electromotor drives the rear through the current drive shaft may be possible.
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Old 09-01-2013, 05:51 PM   #7 (permalink)
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Following.

144 hp for 1400 kg seems overpowered to me. I would cut at least one cylinder out.
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Old 09-02-2013, 01:08 AM   #8 (permalink)
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Subscribed, this will be nice
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Old 09-02-2013, 10:10 AM   #9 (permalink)
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Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
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Old 09-02-2013, 10:41 AM   #10 (permalink)
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Very cool indeed.

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Tags
1.2 tdi, audi a8, efficient, luxury sedan, tuneko

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