fullymatted.
Back to search
911uk

996TT X50 fuel economy suprise

Add to repair workspace
Open repair workspace
Original source
15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH996TT X50 fuel economy suprise

Leading reported evidence

Use almost a quarter of a tank

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

opc gave me a full tank of fuel from the off, but seemingly after about 30miles the needle was indicating I'd used almost a quarter of a tank !

996TT X50 fuel economy suprise
Frequently discussed work

Fill thing up

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

£20 quids worth will not register, fill the thing up.

996TT X50 fuel economy suprise
Read full discussion summary

Leading evidence: 'Use almost a quarter of a tank' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill thing up' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 15 captured posts examined · 1 partial discussions

Compare 2 other evidence results

Fill thing up

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

£20 quids worth will not register, fill the thing up.

996TT X50 fuel economy suprise

Use so didnt want

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

Only put 20 quid in because I wasnt that happy with the super unleaded I was using so didnt want to fill it with the stuff....

996TT X50 fuel economy suprise
Frequently discussed actions (3)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Fill thing up

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

£20 quids worth will not register, fill the thing up.

996TT X50 fuel economy suprise

Use almost a quarter of a tank

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

opc gave me a full tank of fuel from the off, but seemingly after about 30miles the needle was indicating I'd used almost a quarter of a tank !

996TT X50 fuel economy suprise

Use so didnt want

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

Only put 20 quid in because I wasnt that happy with the super unleaded I was using so didnt want to fill it with the stuff....

996TT X50 fuel economy suprise
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link

So following on from my thoughts of the fuel gauge misreading by dropping from full to three qtrs after only around 30miles, once the needle got to near empty and the light was on (range left was c20miles) I put in £20 of BP Ultimate, and when i turned on the ignition there was no change...

No unique explicit quoted action; no causal link assigned

Generation: 20261027T022239Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Drove my new x50 75miles to Paintshield on Sat... ok so I barely boosted the turbo's at all (didnt want any stonechips before getting there), but easily stayed with the flow of traffic, and having zero'd the average mpg on the computer at the outset, was pleasantly suprised to see an average at journey's end of 31mpg from mainly motorway and A roads.... and up until the last few miles when I hit twistier roads it was showng a 33mpg average :shock: !! Frankly I was amazed at how good this was.... altho the fuel guage still seems to have dropped a third, from full at the start of the journey, which doesnt sound right to me if I was averaging 30mpg+... anyway, i'll investigate once I've got through a couple tanks to figure out whether the guage is misreading... I'd be interested to hear how many miles per tank other TT (esp x50 manual) drivers are getting...

POST 2Original post

dont get used to it! i have shares in shell now to try and get some cash back! best i have seen is 22mpg, less round town, but the a/c is rarley off. cheers robin.

POST 3Original post

the fuel gauge does tend to dive down very quickly after a fill up, but then slows up. Don't make the mistake of not filling her up to the brim when you get fuel, the last half of the tankfull is averaged rather than measured and the system is only accurate when a full re fill is done. Something to do with the float only being in one half of the tank. regular TT for me and average around 23mpg. Easily see late 20's on a run.

POST 4Original post

Hardly ever see over 20. 250 miles seems the most I've ever got.

POST 5 / ORIGINAL POSTEROriginal post

Interesting to hear about the fuel guage... I havent fuelled the car yet... opc gave me a full tank of fuel from the off, but seemingly after about 30miles the needle was indicating I'd used almost a quarter of a tank ! I'm certainly hoping it does slow down after half way otherwise ! Theoretically, on a 64litre tank, at an average of 20mpg the tank should be good for c280miles, but by the sound of it that doesnt exactly translate in practice...

POST 6Original post

My tt returns around 22 around town which is my daily commute... Had a trip to Silverstone last summer and to cornwall just after i picked up the car and got on average 30, mix of "sensible" and fast driving.... To be honest you cant have a car like this and worry about mpg though, its about having fun...to get things into context whether its 22 or 30 mpg OPC take the smile off your face with a service, warranty etc..... and all of a sudden buying a few more gallons of go go juice seems like a good deal.....

POST 7 / ORIGINAL POSTEROriginal post

So following on from my thoughts of the fuel gauge misreading by dropping from full to three qtrs after only around 30miles, once the needle got to near empty and the light was on (range left was c20miles) I put in £20 of BP Ultimate, and when i turned on the ignition there was no change... the range still read 20miles left, the needle hadnt moved and the warning light was still on.... I'm not sure if this is related to the float being onlu in one tank, and to start with the other tank is filled, or if its a fault.... if anyone else has noticed this on their 911 pls say so !!

POST 8Original post

err.....what I said earlier. £20 quids worth will not register, fill the thing up. Why are you only putting 20 quid in anyway, you only have to go to the petrol station again sooner?

POST 9Original post

Or just hammer the car around a circuit for a bit as I found out on my 4S once

POST 10 / ORIGINAL POSTEROriginal post

Only put 20 quid in because I wasnt that happy with the super unleaded I was using so didnt want to fill it with the stuff.... will get back to V-power once its used....

POST 11Original post

That's pretty much what I get per tankful on mixed road driving with my StealthBomber... Light comes on around 250miles, but there's plenty left in the tank to fill up about 59L at around 265miles on the odo.

POST 12Original post

I am averaging 15.7mpg and 17mph :evil: communitng in London. That works out at about £5 of petrol an hour but it's a lot more fun than the bus uh:

POST 13Original post

max ever of 22mpg here. stop driving like a girl :wink:

POST 14Original post

The most I ever got was 48mpg In my defence, if any is possible, I was just curious to see what would be achievable when trying. This moment of mediocrity happened between Barnet and Potters Bar. Err, you want me to leave?? But hold on a minute....... :bye: Peter

POST 15 / ORIGINAL POSTEROriginal post

northpole - 48mpg out of what... a 118d ?!! x50 seems happy to give me low 30's on the mway, but the few miles stop start around london, without really booting it, have yielded under 15mpg !!

This is a source reference. Confirm exact model applicability in the original material.