spiraleyes
Posts: 5
Joined: Sun Dec 29, 2013 10:37 am

Re: Bigger Rex fuel tank

I keep seeing people talk about how either the Rex tank size is smaller in the US, or how it isn't due to the confusion between UK and US gallons. I think it's important to point out that the BMW global site claims an i3 Rex can reach up to 300km range(186.411 miles). The BMW USA builder page claims a US i3 Rex can reach 185 miles of range. So is the USA site wrong, or is the Rex tank size actually the same in the US version as it is in Europe?
dvottero
Posts: 22
Joined: Sun Feb 16, 2014 3:55 pm
Location: Los Angeles, CA

Re: Bigger Rex fuel tank

To your point spiraleyes, we don't actually have any cold hard facts supporting that the US got a differently sized fuel tank.

Show me two different parts on a table, with two different part numbers and I'll believe the conjecture -- but right now there isn't enough evidence to support this claim. It's all circumstantial.

It's plausible that the tank capacity didn't change, but just the published size did. And/or how much the car is available to use through software.

There has been precedent for other automakers to address these issues with software and/or published figures. The SMART ForTwo's gas tank is 10 gallons, but the published capacity is 8.7 gallons. The remaining is "reserve."
MarkN
Posts: 89
Joined: Thu Oct 31, 2013 12:45 pm
Location: Fort Collins, CO USA

Re: Bigger Rex fuel tank

Gonville wrote:Can you identify which vehicles are "gas guzzlers"? (besides the M5 which is still a V8 but only 232g CO2. combined MPG 28.5
How about the X5 and X6 with US EPA combined ratings ranging from 14 to 19 MPG for gasoline engines? The X5, with 39,818 sold, was BMW's third-best selling model in the US in 2013, after the 3 series (119,521) and 5 series (56,863).
2015 i3 REx
stumbledotcom
Posts: 484
Joined: Sat Jan 18, 2014 3:35 pm
Location: San Francisco
Contact: Website

Re: Bigger Rex fuel tank

dvottero wrote:Show me two different parts on a table, with two different part numbers and I'll believe the conjecture -- but right now there isn't enough evidence to support this claim. It's all circumstantial.
Thank you. Completely rationale. It seems pretty logical to me that California Air Resources Board rules drove the REx design worldwide. BMW's goal was to have both versions of the i3 qualify for Zero Emission Vehicle Credits.

http://www.arb.ca.gov/msprog/zevprog/ze ... redits.htm

The fact that the i3 REx is the first vehicle with a gas engine to be classified as electric by CARB is a significant accomplishment.

http://www.greencarreports.com/news/109 ... ctric-cars

And while I know that people from other places laugh at us, ZEV credits are already a huge part of the car business here and will only get bigger. BusinessWeek reports that Tesla sold $119 million of credits during the first half of 2013 alone.

http://www.businessweek.com/news/2013-1 ... -past-year

The accumulation of ZEV credits also explains why California dealers are making i3 deliveries while waiting lists exist in other parts of the country and world. Sorry UK friends, in particular.
Gonville
Posts: 401
Joined: Mon Apr 14, 2014 1:31 pm
Location: Hampshire UK

Re: Bigger Rex fuel tank

MarkN wrote:
Gonville wrote:Can you identify which vehicles are "gas guzzlers"? (besides the M5 which is still a V8 but only 232g CO2. combined MPG 28.5
How about the X5 and X6 with US EPA combined ratings ranging from 14 to 19 MPG for gasoline engines? The X5, with 39,818 sold, was BMW's third-best selling model in the US in 2013, after the 3 series (119,521) and 5 series (56,863).

That's true. I was focusing on the 5 series most powerful. So 119,521 and 56,863 are all in the non guzzling range? Being all better than the M5. So 18% of those sales could be considered as potential gas guzzlers based on choice of engine. More than 82% of those sales are better than the GM "average".

So on the X5 which do have some poor figures if you choose a petrol model. So how many of the 39,818 are gasoline? In the UK it's a minority due to the CO2 tax.

What's the equivalent GM model to the X5? How does that compare?

F10 LCI 535D 2013-
i3 ordered 9APR14 delivery Oct...now Born Electric 29 NOV. BEV Laurus Grey, Suite, 19" 429 Turbine, All boxes ticked (including HK) no sunroof.
ChargeBump – A simple solution for "EV charge rage"

Gonville
Posts: 401
Joined: Mon Apr 14, 2014 1:31 pm
Location: Hampshire UK

Re: Bigger Rex fuel tank

true we forgot the 750iL. That is pretty bad.

But on the X5 equivalent SUV I think the other makers need to step up their game...




Image


http://www.fool.com/investing/general/2 ... conom.aspx

F10 LCI 535D 2013-
i3 ordered 9APR14 delivery Oct...now Born Electric 29 NOV. BEV Laurus Grey, Suite, 19" 429 Turbine, All boxes ticked (including HK) no sunroof.
ChargeBump – A simple solution for "EV charge rage"

stumbledotcom
Posts: 484
Joined: Sat Jan 18, 2014 3:35 pm
Location: San Francisco
Contact: Website

Re: Bigger Rex fuel tank

Gonville wrote: That's true. I was focusing on the 5 series most powerful. So 119,521 and 56,863 are all in the non guzzling range? Being all better than the M5. So 18% of those sales could be considered as potential gas guzzlers based on choice of engine. More than 82% of those sales are better than the GM "average".
The CARB credit system applies to each manufacturer's total portfolio not just a brand. That means Rolls Royce and Mini fall under the BMW umbrella. I would guess someone in Munich is looking at it as the more i3s sold in California, the more Rolls Royce Phantoms the BMW Group can sell. The total portfolio view also explains why VW, a generally eco-friendly brand, is actually a net purchaser of credits. VW has to offset not only its Touareg sales but Audi, Bentley, Bugatti, Lamborghini, and Porsche.
pdurham
Posts: 68
Joined: Tue Apr 22, 2014 9:56 am
Location: Tucson, AZ

Re: Bigger Rex fuel tank

All the back and forth about the size of the tank and whether the U.S. tank really is smaller retraces the steps of my research and back-and-forth thinking. At one point, I fully believed that all the confusion must surely be the result of a mix-up between U.S. and Imperial gallons. It was so difficult to get clear reliable information on this subject that I even discussed with the salesman that if we couldn't otherwise verify the size of the tank, before taking delivery, I would ride with their service technician to a gas station when he preps the car for delivery and watch as he fills the REx tank!

But according to the salesman, the U.S. owner's manual for the i3 (same book for both the i3 BEV and i3 REx), says the tank capacity in the REx is 1.9 gallons. (It's my understanding that the tank is actually measured in liters, and is 7 liters for U.S. models and 9 liters for Euro models. We round that to 1.9 and 2.4 U.S. gallons, though the conversion from 7 liters actually equals 1.85 gallons for example.) The best, really, the only, theory I've heard is that the smaller tank was installed to qualify the car as BEVx under CARB regulations.

We live in Arizona, which is not a CARB state. (It was a few years ago, but not now.) It would be great if BMW would sell a non-CARB version of the car with a larger tank. HEAR THAT, BMW?

Also, a friend now on a trip to Belgium says he'll stop into a BMW dealer there and ask if he can order and buy the tank (the Euro 9-liter version of course) from their parts department. He's not planning to actually buy it; just doing some research to find out if he could. When I find out whether the tank is available and, if so, what the cost is, I'll consider next steps. I suppose I could take the Euro tank to my BMW dealer and ask them to put an i3 REx up on a hoist and, without actually doing it, tell me whether the Euro tank would fit. I'm pretty sure the dealer wouldn't be willing to do the installation, but I should be able to find a friendly mechanic. Of course, I'd love to find out that someone else has successfully done it first . . . .

I think we'll end up with an i3 REx some day. We just needed some time to get more and better information to sort this whole matter out.
i3 REx (Andesite Silver, Giga interior, all options except 20" wheels)
June 3, 2014 to present
Gonville
Posts: 401
Joined: Mon Apr 14, 2014 1:31 pm
Location: Hampshire UK

Re: Bigger Rex fuel tank

I think Tom is going to update us on how many litres he is topping up. That should settle it once and fit all.

F10 LCI 535D 2013-
i3 ordered 9APR14 delivery Oct...now Born Electric 29 NOV. BEV Laurus Grey, Suite, 19" 429 Turbine, All boxes ticked (including HK) no sunroof.
ChargeBump – A simple solution for "EV charge rage"

jadnashuanh
Posts: 5192
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: Bigger Rex fuel tank

The US BMW service training sessions say 1.9g. The US website says 1.9g. Until just before actual US release, it said 2.4g, then they changed it.

My guess is that if you could get someone to order a larger tank for you, it would probably fit, but who knows what other things may also be involved (could be nothing, could be a different gas line either to the tank or from it to the motor, or a different bracket, or a different filler door, nozzle, or maybe multiple things).
Jim DeBruycker
2014 i3 BEV, 2021 X5 45e
(The i3 will be sold soon, <17K-miles, interested?)

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