Chris

Hmmm, strokes chin... my old V50 D5 did 5l/100 at 100 and my current Gen 5 Liberty does 6 with 2 people plus luggage on board, sometimes better. I'm thinking (and hoping) you'll do a fair bit better than 5.

But the diesel pollutes and the new car had to be built using fossil fuels that will probably never be accounted for by driving it.

Old cars are therefore better for the environment.

The Liberty's 11 years old Les, I'm thinking it's old enough :) Just sayin if I can get those numbers without trying I reckon Nathan can do better with a modded Mirage. I've never measured my wife's 2013 Mirage (yes, Forg, one of those!) but I'd guarantee it gets easily better than 5 at highway speeds. On the flat the tach sits at about 2,200 rpm at 100. And yes, for those who mock, it easily sits on 100; had it on the freeway yesterday as it happens...

TBH, I am hoping to better 5 litres, and fully expect that no matter how good it is at the end of the first round of mods, I will be try to improve it!

They’re rated at 5.7l/100km, so figured that aiming to beat that by about 15% was an attainable goal.

Sounds doable I'd have thought, and you seem to have lots of good ideas.

You may be better off not looking for aero mods, the 'aesthetically challenged' ones may actually harm the CD, and if you fluked a kit that worked to increase downforce that would actually increase consumption too.

The other stuff you mentioned like a belly pan could help but would be a PITA to do I imagine. Still, I admire your spirit and look forward to the results!

  • Spac replied to this.

    Weren't a bunch of these caught up with the airbag recall, and won't be fixed by Mitsubishi?

    • Spac replied to this.
      timbo

      Weren't a bunch of these caught up with the airbag recall, and won't be fixed by Mitsubishi?

      Mirages were spared. I think the only Mitsubishis that copped the recall were Pajeros.

      Of the five Mirages we have, only the kids’ one has an airbag at all. And it has to be disabled because they both sit too close to the steering wheel...

      https://youtu.be/ZGiviT-C_oY

      This will get you to 0L fuel consumption in no time...

      Space can you do offsets for all of OzVolvo?

      FZJ80 is averaging 16L/100

      HJ45 about 12

      Commodore about 15

      • Spac replied to this.

        Paint is going to come up ok. Note white vinyl over the roof rack holes.

        PaddlerEd

        Space can you do offsets for all of OzVolvo?

        FZJ80 is averaging 16L/100

        HJ45 about 12

        Commodore about 15

        Lol, no. Well, not unless you drive 2km/year.

        Chris

        Sounds doable I'd have thought, and you seem to have lots of good ideas.

        You may be better off not looking for aero mods, the 'aesthetically challenged' ones may actually harm the CD, and if you fluked a kit that worked to increase downforce that would actually increase consumption too.

        The other stuff you mentioned like a belly pan could help but would be a PITA to do I imagine. Still, I admire your spirit and look forward to the results!

        The aero stuff that I am planning is well proven.

        Stuff like taping the gaps makes only a tiny difference but is also easy and non-intrusive. On the other hand, a flat under-floor will give much better gains, but for a lot more work.

        I was getting near 5 on my commute in when I was driving a mirage so you should easily go sub 5 I reckon

        Leave it outside during a Canberra storm and you'll have that fresh golf-ball aero profile in no time.

        Seriously, get more air to the back. Diffuse it from underneath, bring it in from the sides, whatever.

        • Spac replied to this.

          I can see a big fan being purchased for an impromptu wind tunnel and smoke tracers.....

          Youd be better off focusing on weight reduction. Poly windows. Remove sound deadening. Lithium battery. Remove air-con. Strip interior. Drive with no more than the fuel you need for the trip.

          • Spac replied to this.
            egg

            Youd be better off focusing on weight reduction. Poly windows. Remove sound deadening. Lithium battery. Remove air-con. Strip interior. Drive with no more than the fuel you need for the trip.

            Nah, weight reduction works for stop-and-go but does hardly anything at constant speed.

            Averaged out, I stop 2~3 times on my way to work, and 5~6 times on the way home (more traffic and more right turns onto/across busy roads on the way home).

            This is in 55km each way, so it is a pretty clear run.

            Roinik

            Leave it outside during a Canberra storm and you'll have that fresh golf-ball aero profile in no time.

            Seriously, get more air to the back. Diffuse it from underneath, bring it in from the sides, whatever.

            I have been trying to figure out if I can justify calling it a Kamm back or not... leaning towards “not”, mostly due to the rounded edges on the back corner.

            The Lancer coupe looks like a better shape to my untrained eye - tapered turret, longer boot with square edges.

            But I really don’t know, and couldn’t find a viable coupe to start with - seems like Mirages were sold new to mums and P-platers in about equal numbers, but the coupes went exclusively to P-platers and were variously flogged to death, attacked by ricer mods and/or badly neglected.

            @Ex850R, there’s a definite chance of some wool-tuft testing.

            The vehicle mass directly related to engine load. More load more fuel. You should also lower, and stiffen the drive train and suspension. Loss of inertia

            • Spac replied to this.

              Going by aircraft dynamics and engine performance,they fly higher in thinner air and use less fuel and can go faster so you should get a lift kit really..............

              egg

              The vehicle mass directly related to engine load. More load more fuel. You should also lower, and stiffen the drive train and suspension. Loss of inertia

              The load is only particularly relevant when accelerating the mass.

              There’s plenty of talk about this on ecomodders.

              The lowering is a given. It reduces the frontal cross sectional area of the car by the amount that the tyres are “hidden”, and (more importantly) it reduces the air that can get under the car.