Second tankful, exactly 22mpg again, based on 225 miles. (12.9l / 100km over 363km). That was a mix of mostly motorway, with other open roads and NO town driving. Got a feeling thats going to be my average unless there is a change after a few '000 (or cold weather hits it hard).
By the way is a US mile any different from a UK one?

 

2nd tank - 24mpg.

 

1st Tank

17mpg, but been caning it!

 

:norty:!

Guess your into the stig way of running in then....

 

My very first tank full has returned an unbelievably good 26.2mpg :D

240 miles of that was a motorway trip taking it pretty gently on the way up, an very gently on the way back in thick fog. So I'm probably not going to see that on the daily commute, but it is still impressive seeing that the other 26 miles, were quite a bit less restrained.

I really did try to keep the revs down, honest, but it was impossible to resist quick blasts up in to the rev stratosphere, especially with someone else in the car.

I've hit the rev limiter in two gears accelarating on an up hill ramp to the bypass. I couldn't hear the buzzer, and the renesis gives no indication that it is running out of power at almost 10,000rpm.

I am going to be careful not to do that again, and keep it under 7000 as it says in the manual. But the renesis spins up in a blink of an eye, making it oh so difficult!

Cheers
---Dave

 

I kow, vey bike like revving, I'm trying my best to not rev past 7k...

Commute to work didnt give me any real opertunities to open her up some.

 

Don't see the need with modern engines. I ain't been caning it from cold, its just common sense.

I love driving this car and can't keep it below 4k revs.

I need a new pair of tyres on the back already!

 

I'm not sure you can actually cane it immediately from cold. I started up, left it about 10 seconds, then blipped the trottle to let my father hear the sound, and the rev limiter came in at just over 6000rpm. Left it a few minutes to warm up (and so it wouldn't flood), and after that it spun up all the way.

Cheers
---Dave

 

Yeah Druck, it limits RPM when cold. But Its probably still better for the engine to treat it nicely until properly warmed up.

600miles isnt that long. 415 on the clock now.

Just been out for a drive at lunch. "raced" a bik round a roundabout/onto motorway. ended up cruising at 90, he then shot off like I was standing still.

 

I did a particularly nice drift with the tail slighlty out (DSC still on) coming off a roundabout at lunchtime. It has a particularly poor surface for grip, so hopefully not to bad on the tyres - if I get into that habit, I can see myself needing new tyres at around 1000 miles!

Cheers
---Dave

 

Do not spank a rotary from cold.
It is the law.(and yes , 6,000 rpm is spanking it when cold)

You have been warned.....

 

Dont worry, I just reved it cold once, wouldn't dream of trying that moving. I couldn't get it up to 6000rpm in first half mile from the house without seriously changing the law of physics anyway!

Cheers
---Dave

 

Dave that was impressive, I cant get near that with mostly motorway driving (limited to 70-80 by the weight of traffic on the M1). Were you in 6th for all that, or did you cruise in a lower gear? I tend to get it in 6th as soon as I can most of the time (being resigned not to be able to enjoy myself because of all the traffic), and am wondering if a lower gear is actually more efficient. Also did you have DSC on or off?
JH

 

I find I can drive the car easily using the lower half of the gear box almost exclusivly (2nd, 4th, 6th). Its Just at the moment , I'm choosing not to

This tank is mainly Urban and short sprint. past 1/4 and only 200miles , gona be low :O

 

DSC on and in 6th gear most of the time, dropping to 5th to overtake (resisting the temptation to use 3rd). Was going about 85-90 on the way up, but it really was foggy on the M42 on the way back, so kep it down to around 50 to 80. Thats probably where the good MPG came in.

But remember that was a single tank calculation, and you really need to average over serveral fill ups, as different pumps will start cutting out at very points, and its then up to your judgement to cram in the last few litres. Unless you fill until it starts spurting out of the top, there could be a considerable difference.

However its not looking like I'll get anything near that figure commuting to work, and taking it out for a blast each lunctime - even though I'm keeping it under 7000rpm (most of the time) until 600 miles. After that I'll be grateful for anything in the 20's!

Cheers
---Dave

 

I'm caculating my mpg on pump display fed litres and odometer miles, which may not be 100% accurate as said.

2nd tank - standard cheapy 95ron.

230 miles, 51 litres till full.

Works out to 20.5 mpg.

Was 100% urban and lunchtime sprint, all below 7k rpm, miles on the clock now 530.

Urban cycle is supposed to be 18-19 so I cant realy complain, unlike my bank manager

3rd tank is optimax again.

 

Just filled up another tank after some more normal commutting driving, and quite a bit of lunchtime spins. Only did 220.5 miles before it was close to empty, so I was expecting the worse, but bunging the numbers in I see its quite a respectable 23.5mpg.

Thats also bang in 5quid a week more than my what was getting from the MX3, so what a bargin for the extra enjoyment.

I am still taking it quite easy, I'm sure when I'm making full use of the rev range I'll be down in the 22's.

 

Mostly gentle "running-in", few lapses of concentration so to speak. Not a bad 23.2mpg though.

 

Looking at those figures I found out I've been a complete dunce. When I calculated litres to gallons at work I dived by 5.545 instead of 4.545

That makes quite a big difference in the bad direction:

1st tank: 21.2mpg
2nd tank: 19.3mpg

Which means I'm going to have to go without food at least one day a week

Sorry if my cockup gave anyone unreasonable expectations.
---Dave

 

Dave! How could you??? I was even switching off my engine on downhills to try and match your figures!! You gave me false hope! So it looks like 22mpg is a reasonable average then. Although I still see threads on the USA / Oz forums that suggest it might get better at higher miles.

 

Sorry, I am a complete muppet.

 

This is amazing - but wrong. Sorry.

There are 3.785 litres/gal, not 4.55. This gives you a total of 7.58 gallon used, for a grand total of 18.4 MPG. This is nothing to sneeze at either. Congrats!

For a great source of online unit conversions

 

VelocityRed8 You use US gallons, we use Impreial gallons. One of ours is worth 1.201 of yours.

Not thaty I am in the positiion to lecture anyone about numbers at the moment

 

VelocityRedRX8........Yes we've got BIGGER gallons but would much rather be paying what you pay per gallon even if they are smaller gallons.

We pay roughly $1.27 per LITRE over here!!! That's about $5.70 per UK gallon ( roughly $4.80 per US gallon)....and you guys are upset about the MPG from the car!!!!!!!!!!!!!!

Cheers

Doogy

 

Hi Folks

I am a newbie at this, 1st post and eveything.

Got my RX8 a week ago and have done 700 miles since.

Upto the 600 mile mark I was averaging about 23.5mpg but now I have started hitting the (very quiet) rev warning I'll keep you posted.

BTW BigGrin is what I have now I got my 8 :D