Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Petrol Vs Diesel- Update 22/09/11

320touring · 09-02-2011, 09:45 AM

As you can no doubt see from my garage/sig, I like RWD petrol cars..

They provide an involving driving experience, and can return decent figures if driven sympathetically..

However, I spend plenty of time driving the m8 motorway (Highway). this cannot be classed as fun, ever.

2 lanes each way, tailbacks (even at 8pm on a sunday!) and literally NO redeeming features/bends to enjoy RWD

These trips are either a 50 mile round trip commute or a 130 mile roud trip to my Unit. Either way, they are boring and tedious in extreme.

Thankfully, the Unit run has some twisties that I can enjoy (at legal speeds) so I can have some RWD fun for 16 miles or so.

Being in my colleague's new car (see here: http://ecomodder.com/forum/showthrea...are-18683.html )

I saw that with no hypermiling techniques, she was already doing approx 15-20 UK MPG better than my best petrol car..

So I'm thinking- can I get a Diesel car that is frugal on the hateful M8, yet fun on the twisties?

I'm not fussed whether RWD/FWD, but it needs to be manual and have a decent chassis setup.

and a budget of £1000

Payback period needs to be less than 2 years (based on 18000 miles PA)

e.g., on fuel my 318iS would use 445.55 UK Gal at a cost of £6.05 a gallon, giving a total of £2695.57

so at 55mpg, the diesel would use 327.28 UK Gal at a cost of £6.18 a gallon, giving a total of £2022.59

saving £672.98.. (based on NO hypermiling, so likely to be more)

Or do I just spend a few hundred fitting LPG to the iS, and enjoying filling at £0.70/litre, and concentrate on aero/engine and hypermiling techniques?

What would you do, and why?

09-02-2011, 09:45 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	Petrol Vs Diesel- Update 22/09/11 As you can no doubt see from my garage/sig, I like RWD petrol cars.. They provide an involving driving experience, and can return decent figures if driven sympathetically.. However, I spend plenty of time driving the m8 motorway (Highway). this cannot be classed as fun, ever. 2 lanes each way, tailbacks (even at 8pm on a sunday!) and literally NO redeeming features/bends to enjoy RWD These trips are either a 50 mile round trip commute or a 130 mile roud trip to my Unit. Either way, they are boring and tedious in extreme. Thankfully, the Unit run has some twisties that I can enjoy (at legal speeds) so I can have some RWD fun for 16 miles or so. Being in my colleague's new car (see here: http://ecomodder.com/forum/showthrea...are-18683.html ) I saw that with no hypermiling techniques, she was already doing approx 15-20 UK MPG better than my best petrol car.. So I'm thinking- can I get a Diesel car that is frugal on the hateful M8, yet fun on the twisties? I'm not fussed whether RWD/FWD, but it needs to be manual and have a decent chassis setup. and a budget of £1000 Payback period needs to be less than 2 years (based on 18000 miles PA) e.g., on fuel my 318iS would use 445.55 UK Gal at a cost of £6.05 a gallon, giving a total of £2695.57 so at 55mpg, the diesel would use 327.28 UK Gal at a cost of £6.18 a gallon, giving a total of £2022.59 saving £672.98.. (based on NO hypermiling, so likely to be more) Or do I just spend a few hundred fitting LPG to the iS, and enjoying filling at £0.70/litre, and concentrate on aero/engine and hypermiling techniques? What would you do, and why? __________________ My Blog on cars- Fu'Gutty Cars http://fuguttycars.wordpress.com/ US MPG for my Renault Clio 182 --------------------------------------------------- Last edited by 320touring; 09-22-2011 at 03:00 PM..