Surely a car with a high MPG has a low CO2 rating (g/km) rating?

[Marcos]

There must be a massive correlation??


I was looking at a Prius, it has 104 g/km, but I could've sworn I've seen a BMW that goes under 100 g/km, but there's no way a BMW gets 55-65 MPG

[Macadee]

99g/km CO2, 74.3 mpg : http://www.bmw.co.uk/en_GB/new-vehic...nicaldate.html - select '116d EfficientDynamics' in pull down

[Marcos]

That's mad, so sans-battery & aerodynamics, it beats the Prius at MPG & CO2

Impressive

I mean, I don't know what the latest Prius achieves to be fair, vs £20,830 BMW (impressive), Diesel (damn), Manual (damn, in this case)

EDIT2: Oh, wtf, I thought a Prius was £30k+

[Macadee]

My last 2 cars have been manual diesel BMW's, and my next one will be a manual diesel BMW.

I'd recommend to go for some test drives, you be surprised how far diesels have come on the last few years.

[kalniel]

The ratings are so far removed from reality they should just be ignored to be honest - a VX insignia is a HUGE car, but it's 2 ltr diesel engines emit below 100g/km CO2 and are rated for 76.3mpg combined..

But it's not surprising that an efficient diesel can beat out a petrol car with a large battery, and unless you are city driving, they'll probably beat it in the real world as well (albeit with far closer to the 55mpg that every modern diesel seems to actually achieve these days)

[directhex]

This is mostly Diesel vs Petrol

[Butcher]

Prius aren't as efficient as they would like you to believe, not really any better than a small diesel or even a small petrol. Not to mention the lithium for the batteries is incredibly environmentally unfriendly.

Also CO2 and MPG should be directly correlated since the CO2 comes entirely from burning fuel.

[kalniel]

Prius aren't as efficient as they would like you to believe, not really any better than a small diesel or even a small petrol.

Or as in this thread, a large diesel

Not to mention the lithium for the batteries is incredibly environmentally unfriendly.

There is no lithium in Prius batteries.

[Zak33]

the CO2 tests are......

manipulatable

big german companies now know how to work that system best now, though most manu's can help the figures along, as Company car tax AND tax discs are related to low CO2.

buy which ever way it looks.... they modern car IS mammothly better on fuel AND co2 than 10 years ago!

[Marcos]

My last 2 cars have been manual diesel BMW's, and my next one will be a manual diesel BMW.

I'd recommend to go for some test drives, you be surprised how far diesels have come on the last few years.

I do mainly city miles, sometimes I go months without a 20+minute drive. I hear DPF filter this, and small journey that, about diesels? What has your experience been?

Also, automatic is a serious thing for me now because trafficky commutes on manual wear me out, no idea why the UK is so attached to manuals, I can see these seas changing quickly to USA-esque automatic love over the next generation or so.

[Butuz]

Or as in this thread, a large diesel

There is no lithium in Prius batteries.

NiMH is soooo clean

[Macadee]

I do mainly city miles, sometimes I go months without a 20+minute drive. I hear DPF filter this, and small journey that, about diesels? What has your experience been?

Also, automatic is a serious thing for me now because trafficky commutes on manual wear me out, no idea why the UK is so attached to manuals, I can see these seas changing quickly to USA-esque automatic love over the next generation or so.

My daily commute is an hour each way, but frequently do 3+ hour journeys so the diesel suits me.

I have had no problems so far with DPF, but I hear about others who do mainly small journeys and need replacement batteries and DPF filters.

In your circumstances I would go for a petrol car, or consider an electric : http://www.bmw.co.uk/en_GB/new-vehic...013/start.html

[kalniel]

I do mainly city miles, sometimes I go months without a 20+minute drive. I hear DPF filter this, and small journey that, about diesels? What has your experience been?

Wife's diesel is now used for this, but we were careful to get a model without DPF for this reason. Nowadays that's hard unless you go quite old second hand, so I'd definitely recommend petrol - if economy is a concern then there's a lot of turbo charged small capacity petrols around now which can be fairly economic if driven carefully.

Also, automatic is a serious thing for me now because trafficky commutes on manual wear me out, no idea why the UK is so attached to manuals, I can see these seas changing quickly to USA-esque automatic love over the next generation or so.

Depends where you are. For cities certainly, but automatics are a pain for use in the countryside sometimes.

[Butcher]

There is no lithium in Prius batteries.

My mistake, you're right they're NiMH.

[hardwareguy15]

i think the batteries in the Prius are really heavy which doesn't do it any favours

[TheAnimus]

I hate Prius. Not just because anyone who drives one hates driving (as a cyclist, the amount of Prius drivers that are deadly is scary.

But also its needlessly complex.

I recently bought a DS5 as a second stay at my parents car, mostly because my parents can't be trusted to own a car.

It is interesting because it has no madly complex gearing system for providing electric + combustion power.

It has a very, very efficient diesel driving the front wheels, and an electric system on the back. It charges via the wheels, and powers via the wheels, no messy gearing system. It gets about 60mpg in my driving, but mostly, its really, really comfy, not like a Prius which reminds me of a church bench.