GET IN THERE 42.5 mpg in a LCR

[NickK]

LCR ??

 

[thepharcyde]

I found the Mini CS the worst in relation to engine size vs MPG. Prob worse as the supercharger is constantly spinning moreso than a turbo?

 

[233]

LCR ??

poor mans 2wd Audi S3

 

[Reality Bites]

No Fox, it most certainly isn't. Getting good mpg from normaly aspirated engines isn't too difficult.

try getting more than mid 30's from a CTR then......

Best i've ever managed was 34mpg and that was never going over 3500RPM......that's hard work!

 

[paradigm]

I found the Mini CS the worst in relation to engine size vs MPG. Prob worse as the supercharger is constantly spinning moreso than a turbo?

Yep. can't usually get over 30 in my dads Cooper S no matter how hard you try.

 

[Simon]

A 1992 Rover 220 Turbo is quoted at 45.6mpg for Extra Urban. At constant speeds a turbo is much economical than a NA engine

 

[Combat squirrel]

whats the most fuel efficient speed for a 306 TD 1.9 mechanical (not HDI), going cornwall on wednesday, need not use fuel, im guessing sitting at 60/61mph would be best fuel wise?

 

[bam0]

fox is just jealous because he bought a beemer rather than a Skoda

Worst attempted comeback, evar.

 

[Jonnycoupe]

No it isn't. Don't be daft. Even at motorway cruising speed the turbo is spooled up.

Which reduces pumping losses and drives up efficiency. Its the low compression ratio that hurts turbo mpg not the fact it has a turbo.

 

[lordrobs]

I find the trip computer in mine lies more when I poodle about giving a false sense of better economy.

 

[Tom|Nbk]

You should try it, beats washing sick out of the back of a diesel Skoda.

Ouch.

 

[Toker]

I can't wait til someone starts a "GET IN THERE *insert random amount* mpg in a Mondeo/BMW" thread and its full of praise

 

[Howard]

No it isn't. Don't be daft. Even at motorway cruising speed the turbo is spooled up

But there isn't as much load on the engine so I'd expect 40MPG is attainable at 70mph

 

[Firestar_3x]

On a side note the turbo is only spooled when accelerating, during motorway cruising conditions unless you put your foot down the turbo isn't spooled / producing boost.

 

[Simon]

But there isn't as much load on the engine so I'd expect 40MPG is attainable at 70mph

Easily. The LCR runs a 9:1 compression ratio too so its hardly low (relatively).

 

[Howard]

On a side note the turbo is only spooled when accelerating, during motorway cruising conditions unless you put your foot down the turbo isn't spooled / producing boost.

Quite. Else there seems little point in using a small turbocharged 4pot for efficiency really

 

[paradigm]

Easily. The LCR runs a 9:1 compression ratio too so its hardly low (relatively).

Easily huh?

Want a go?

 

[Simon]

Quite. Else there seems little point in using a small turbocharged 4pot for efficiency really

Exactly. A turbo can also be contributing to engine performance without creating boost too

 

[Simon]

Easily huh?

Want a go?

Eh? Want a go at what exactly? Driving an LCR to achieve the best possible MPG - no thanks it might sludge up on me. Dont tell me you have got upset at another one of my posts.

Downsizing is the short-term future for gasoline engines. The 1.8T is a good example of an early effort, relatively high compression with a turbo added for performance when needed and efficiency via reduction of pumping losses under part throttle conditions.

 

[Simon]

Also I didn't realise that the driver had much effect on economy when sitting at 70mph ?