Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - An unusual one.. BMW 535i Trackcar- MPG Maximising and Aero efficiencies...

320touring · 07-26-2011, 09:03 AM

Right, here's an odd one for you lot..

A fuel efficient Trackday car..

1989 BMW 535i Manual

3440cc, 12 valve 6 cylinder 211bhp

US MPG specs are 14 city, 21 highway, 16 combined.

The car has been bought solely for use as a track car- so is not restricted by the majority of everyday convenience factors required in a daily driver. however, it MUST remain road legal, so we can drive to/from the circuit..

I'd like to beat the City figure of 14mpg in overall use- this would be driving to/from the circuits PLUS the laps done at full pace. Even better would be getting to the combined figure of 16US MPG..

So far, the car has completed 1 track day and covered 129.4 miles- including 34 laps of a 1.3 mile circuit.

The tank was filled prior to the start and contains 80L of fuel.

We currently have more than 1/2 a tank left, so will look to use that for the next trackday.

I'm after any suggestions you may have around weight saving and aero enhancements that would improve it's performace on the track (better acceleration/braking due to less weight) and better economy (aero for travelling to/from the circuit?!)

Please see the next few posts for details of what's been done so far- including plenty of pictures

Thanks in advance,
Neil

07-26-2011, 09:03 AM	#1 (permalink)
320touring Master EcoModder Join Date: Jun 2010 Location: scotland Posts: 1,434 The Mistress - '88 Bmw 320i Touring SE Team m8 Last 3: 27.17 mpg (US) Germany Beadle - '91 Mercedes 300td (estate, N/A) 90 day: 24.63 mpg (US) The Bloodylingo - '05 Citroen Berlingo Multispace Desire 90 day: 39.77 mpg (US) Shanner Scaab - '03 Saab 9-5 estate Vector 90 day: 26.19 mpg (US) Clio 182 - '05 Renault Clio RS 182 182 90 day: 31.73 mpg (US) Thanks: 90 Thanked 95 Times in 79 Posts	An unusual one.. BMW 535i Trackcar- Updated 02/11/11:) Right, here's an odd one for you lot.. A fuel efficient Trackday car.. 1989 BMW 535i Manual 3440cc, 12 valve 6 cylinder 211bhp US MPG specs are 14 city, 21 highway, 16 combined. The car has been bought solely for use as a track car- so is not restricted by the majority of everyday convenience factors required in a daily driver. however, it MUST remain road legal, so we can drive to/from the circuit.. I'd like to beat the City figure of 14mpg in overall use- this would be driving to/from the circuits PLUS the laps done at full pace. Even better would be getting to the combined figure of 16US MPG.. So far, the car has completed 1 track day and covered 129.4 miles- including 34 laps of a 1.3 mile circuit. The tank was filled prior to the start and contains 80L of fuel. We currently have more than 1/2 a tank left, so will look to use that for the next trackday. I'm after any suggestions you may have around weight saving and aero enhancements that would improve it's performace on the track (better acceleration/braking due to less weight) and better economy (aero for travelling to/from the circuit?!) Please see the next few posts for details of what's been done so far- including plenty of pictures Thanks in advance, Neil __________________ My Blog on cars- Fu'Gutty Cars http://fuguttycars.wordpress.com/ US MPG for my Renault Clio 182 --------------------------------------------------- Last edited by 320touring; 11-02-2011 at 09:37 AM..