Posts: 19
Joined: Mon Mar 16, 2015 9:10 am
Location: UK, Surrey


Mon Mar 16, 2015 9:15 am

Just wanted to say hi.

About to purchase and i3 and just wondering what everybodies experience it has been.

Would be good to find out about long term usage and also how its been on long drives. Dont do many but occsionally a 200 /250 mile drives will be on the cards.

How did it perform, and how noisy is the rex as I get mixed info on line

Anything else worth knowing before I pull the trigger on the order.

thank youy

Posts: 35
Joined: Fri Feb 06, 2015 8:52 am
Location: Southern NH

Re: Newbie

Mon Mar 16, 2015 9:40 am

I've had my REx for just under two months now, and have used the REx a few times under varying conditions. Like you, I have the occasional extended (100+ mi) trip, which is what attracted me to the i3 REx over a pure EV.

The first time I had the REx engage was to initially test it to make sure it worked by not charging the battery overnight. My initial impression was actually pure panic because as I watched my range decrease, it simply went blank ("--") with around 3-4mi remaining, and I didn't hear or see anything (I expected the center display to illustrate the REx was engaged). It was only after exiting from the highway and turning down the radio that I noticed the hum from the motor which calmed my nerves.

I've also made a 125mi each way trip between NH and RI, which was pretty much uneventful. As this was mainly highway, the transition from battery to REx was seamless, and I ended up stopping for gas a little sooner than I probably needed to as I knew I'd be right on the edge of the combined range (5F temps). The most memorable part of this endeavor was topping off the gad tank after a whopping 1.4 gallons :D

Finally, just this past weekend I was running around town on some extended errands requiring the REx to manage much more city/urban driving than previous uses, and I must admit the hum was much more noticeable. I would stop well short of saying it was disruptive or obtrusive, but having the motor continuously turn on and off at stop signs and traffic lights certainly caught your attention versus just having it hum in the background.

Good luck!

Posts: 235
Joined: Sun Jan 25, 2015 5:24 am
Location: Bath, UK

Re: Newbie

Mon Mar 16, 2015 10:24 am

My experience of the ReX is that you don't notice it turn on but sometimes you notice it when you're slowing down. The car is so quiet on electric that when you you hear the ReX you begin to wonder whether its noisy. Then you get back into an ICE car and realise that the ReX running is no noisier and maybe quieter than a ICE car.
2015 i3 ReX Solar Orange, Loft interior world. BMW professional, 19" turbine-spoke 429 wheels, DC rapid charging, driving assistant plus.

Posts: 4500
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: Newbie

Mon Mar 16, 2015 10:46 am

The REx does not always run at the same speed, so depending on the load, it can easily fall into the background noise. And, it purposely slows down as you do to minimize the noise.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV

Posts: 19
Joined: Mon Mar 16, 2015 9:10 am
Location: UK, Surrey

Re: Newbie

Mon Mar 16, 2015 12:15 pm

Thats good as read in few places its very loud which suprised me.

I take it all the coding chat regarding the REX is more about US specs and its in-ability to run from 75% battery or are there any tweaks in uk as well

Posts: 182
Joined: Sun Aug 03, 2014 10:15 am
Location: Staffordshire, UK

Re: Newbie

Mon Mar 16, 2015 1:52 pm

I've done 3,600 miles in 2 nearly months 67% electric the rest on REX (obviously). BUY! BUY! BUY! Yummy. This is the car you are looking for.

My first day was 150 miles. And every day I'm commuting 120. Have done a 160 mile trip to visit friend with no charging. I am in the UK - so we get to use up the fuel first if we want. I keep about 25% battery if on a long trip so you can do some "overtaking" for a few miles, let the battery run below the set point and then slow down to let the REX catch up with the set point. TBH - you'll usually hit traffic that does that anyway.

I have learned where to knock the REX off on my way home - to the point it annoyingly kicks in about 100 yards from home sometimes (despite having 6.5% battery and the sat nav knowing I'm 0.1 miles from destination) and then still insists on doing it's cool down cycle (runs a radiator fan somewhere under the car).

Noise wise - you do hear it, and it reminds you of how your wallet is being emptied faster than stopping to put more electricity in ;-) But it's not intrusive, sound like there's someone riding a nice quiet BMW 650cc scooter about 20 yards behind you (not one of the noisy 50cc wasps). I must go for a ride in my Diesel X-Trail just to remind myself of what noisy is! It's been sat on the drive for 2 months poor thing! The revs pick up as you go faster, it stops at 10mph and starts up again at 20mph. Unless you have really low SOC when it will embarrasingly keep running, destroying the portrayal that you are saving the planet and tippy toing around using nothing but wind and sun power and fairy dust.

Funny isn't it - you'd never ask someone if you can hear the engine in a 1.6 Jetta - because they'd say - er, what? Like of course you can - its' an engine, what did you expect? And that's the thing, don;t agonise over using it, think like I do - if I didn't have that little motor, I'd have to wait another 3 years to get an EV when the Telsa 3 comes out as I can't be doing with hoping the rapids aren't broken/occupied and getting annoyed with public chargers getting ICEd. I'm at the point where I'm going to sell the X-Trail and drive a 1000 mile trip to France in the summer. I'm confident that as long as I stop of regularly for fuel - and pick campsites with electric hook up then it will be just like driving a regular car. the best bit of course being that at weekend I often do 200 miles - but not all at once and all on electric.

As an experiment - I'm seeign how long my fuel tank lasts. Filled up 3 weeks ago, and still have 2/3. 490 miles done so far :-0. That's more to do with me giving up on the 120 miles a day commute, driving in 1 day, and using the train in between. Means I can use a public charger without much disruption to my schedule and more importantly as good as the ACC is in the i3 traffic assist, you can't yet sleep! The train solves that last bit.
i3 REX Ordered 06/08/14. Collected 27/01/15
Capparis White, 429s, Loft, Park Assist, Winter Pack, Professional Media, Drive Assist Plus, DC Prep, LED headlamps.
Essential energy reading for EV owners...

Posts: 437
Joined: Wed Mar 05, 2014 10:47 pm
Location: Atlanta, GA

Re: Newbie

Mon Mar 16, 2015 2:05 pm

nowtta60 wrote:I've done 3,600 miles in 2 nearly months 67% electric the rest on REX (obviously).
Wow, I think that's the lowest percentage of electric miles I've heard of in an i3 - glad it's working so well for you. Maybe you'll end up being the leader in REx miles after you've had your car a bit longer, as most people wouldn't have purchased an i3 with your commute.

EDIT - well sounds like you've adjusted your daily travel, so maybe your electric mile percentage will only go up from here.

Posts: 19
Joined: Mon Mar 16, 2015 9:10 am
Location: UK, Surrey

Re: Newbie

Mon Mar 16, 2015 2:07 pm

thanks nowtta60. that's great to read.

This is the key out of a 5 day week two days are about 70 mile commute and others be luckly to get 10 miles.

its all looking good for it. Have a i3 booked for 24hours from Friday to Saturday so will be doing a bit of driving I think to get better feel for the car.

Then just case of colour. Shame no EBII option

Posts: 265
Joined: Thu Feb 19, 2015 9:56 am
Location: Silicon Valley

Re: Newbie

Tue Mar 17, 2015 9:03 am

shes a superb city car - not so much a high speed freeway bomber

instatorque super low speed quick

really like the one pedal brake regen driving

at high speed i dont hear the rex - - at low speed its noise is not a problem

free (included), unlimited fast dc charges during the lease 2.2 miles from home

2014 i3 BEV
Solar Orange/ Mega

Posts: 113
Joined: Sun Mar 23, 2014 2:55 pm
Location: UK

Re: Newbie

Tue Mar 17, 2015 10:37 am

REX essential in UK unless you never do more than 50 miles per full charge.

You can hear engine but other traffic more noisey.

250 miles ok just plan trip if you can for your electric or gas stops.

10000 miles total done in my REX no problem 3000 on gas all good :mrgreen:
i3 REX September 2014, now done over 17000 miles, 13000 electric.

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