Sr180 Poor Mpg

[chunkyhunk56]

can you please explain why the dpf causes increased fuel consumption

[mbrennan29]

Unfortunately, no matter how many people express their disappointment with this thirsty, under performing example of an engine, the Toyota "REPS" will try to shoot you down with claims that you cannot drive, you hate diesels, you hate Toyota etc etc!!!

They do not consider that some of us might just be able to drive a little incy bit and have much more experience, but more importantly, have many examples to compare to than them!

If I get 53mpg (claimed combined is 49.6) out of a 150 CDTi driving it in exactly the same manner I drive a T180 and it gets 39 (claimed 45.6) HOW THE HELL CAN IT BE MY DRIVING??? And the 150HP CDTi feels easily as quick!

Well if i and others can achieve the quoted combined mpg and above in the auris how can it be impossible?

There are 2 reasons why you wouldnt achieve it:

1) There is a problem with the engine in the car

2) Your driving style

Just because you might have driven 'millions' of miles does not make you a good driver in any way shape or form. And how can you say you have many more examples than anyone else on here, you do not know what anyone else on here drives or has driven in the past. Your just one of those people who has to be right all the time despite the fact there are people PROVING you wrong.

[OldSkoO1]

can you please explain why the dpf causes increased fuel consumption

DPF systems have 5th injectors that are separate from the injectors that inject fuel into the engine. A t180 with its D-Cat system has a trap to trap deposits and a sensor to detect when the trap filter is full. When it is full the system burns off the deposits and therefore gives the car lower emissions, not just low co2 emissions but NOx emissions are cut in half and particle emissions 90% reduced.

But of course to burn off these deposits the system injects diesel from the 5th injector into part of the exhaust system that burns these particles away. The injection of diesel into the 5th injector is what causes consumption to suffer; as it is using more fuel to burn and re-generate the exhaust gases and break down particles.

Unfortunately if you do a lot of town driving or stop / start the re-generation cycle will kick in more often and therefore combined your consumption suffers. However remove continuous stop / start (e.g. town traffic jams and constant traffic lights) from your driving and you will see better MPG. Obviously this is impossible for some people.

But i will always state, just like any other diesel, if your journey is long enough and you give it a run out of town, the MPG from the car is as stated. I get 47mpg on a run and i have also seen 54mpg. However my normal MPG is probably around 42mpg because i have a bit of fun and my journies involve 20mins of v.slow city traffic.

Good thing is the d-cat system to reduce emissions may pre-empt new emissions laws that have been talked about that may appear 2009/2010.

[Bry]

Unfortunately, no matter how many people express their disappointment with this thirsty, under performing example of an engine, the Toyota "REPS" will try to shoot you down with claims that you cannot drive, you hate diesels, you hate Toyota etc etc!!!

They do not consider that some of us might just be able to drive a little incy bit and have much more experience, but more importantly, have many examples to compare to than them!

If I get 53mpg (claimed combined is 49.6) out of a 150 CDTi driving it in exactly the same manner I drive a T180 and it gets 39 (claimed 45.6) HOW THE HELL CAN IT BE MY DRIVING??? And the 150HP CDTi feels easily as quick!

Well if i and others can achieve the quoted combined mpg and above in the auris how can it be impossible?

There are 2 reasons why you wouldnt achieve it:

1) There is a problem with the engine in the car

2) Your driving style

Just because you might have driven 'millions' of miles does not make you a good driver in any way shape or form. And how can you say you have many more examples than anyone else on here, you do not know what anyone else on here drives or has driven in the past. Your just one of those people who has to be right all the time despite the fact there are people PROVING you wrong.

"Your just one of those people who has to be right all the time despite the fact there are people PROVING you wrong."

Like Pea's from a pod aren't we?

I agree with you, driving millions of miles safely doesn't necessarily make you a good driver it just makes you very experienced, universally recognised as one of the most important overall skill factors.

But having examples to compare to past and present is extremely relevant, because in those millions of miles there has never been a car that hasn't and doesn't achieve at least claimed figures, usually higher, consistently, day in day out without resorting to "special" driving styles. There is one common factor that stands out, the T180 DPF engine. in a like for like situation, it is at least 10% down against claimed combined figures compared to my comparisons.

I believe the reason is simple, the official mpg test will almost certainly have been carried out when the engine was NOT running a DPF regen cycle, unfortunately, in our hands it runs this regularly, hence at least 10% down in mpg against claimed. As compared to a non DPF engine of course!

[T Sport 1978]

Unfortunately, no matter how many people express their disappointment with this thirsty, under performing example of an engine, the Toyota "REPS" will try to shoot you down with claims that you cannot drive, you hate diesels, you hate Toyota etc etc!!!

They do not consider that some of us might just be able to drive a little incy bit and have much more experience, but more importantly, have many examples to compare to than them!

If I get 53mpg (claimed combined is 49.6) out of a 150 CDTi driving it in exactly the same manner I drive a T180 and it gets 39 (claimed 45.6) HOW THE HELL CAN IT BE MY DRIVING??? And the 150HP CDTi feels easily as quick!

Well if i and others can achieve the quoted combined mpg and above in the auris how can it be impossible?

There are 2 reasons why you wouldnt achieve it:

1) There is a problem with the engine in the car

2) Your driving style

Just because you might have driven 'millions' of miles does not make you a good driver in any way shape or form. And how can you say you have many more examples than anyone else on here, you do not know what anyone else on here drives or has driven in the past. Your just one of those people who has to be right all the time despite the fact there are people PROVING you wrong.

"Your just one of those people who has to be right all the time despite the fact there are people PROVING you wrong."

Like Pea's from a pod aren't we?

I agree with you, driving millions of miles safely doesn't necessarily make you a good driver it just makes you very experienced, universally recognised as one of the most important overall skill factors.

But having examples to compare to past and present is extremely relevant, because in those millions of miles there has never been a car that hasn't and doesn't achieve at least claimed figures, usually higher, consistently, day in day out without resorting to "special" driving styles. There is one common factor that stands out, the T180 DPF engine. in a like for like situation, it is at least 10% down against claimed combined figures compared to my comparisons.

I believe the reason is simple, the official mpg test will almost certainly have been carried out when the engine was NOT running a DPF regen cycle, unfortunately, in our hands it runs this regularly, hence at least 10% down in mpg against claimed. As compared to a non DPF engine of course!

You are shooting at thin air my friend... You can always come up with some far fetch reasons for why the official figures are better than what you can achieve, simple fact is there are people out there who can achieve this figure and there are some who can't. You being one that who can't... I being one that can get near to it since i am averaging 43mpg combined at this moment in time, and i know full well how hard and what mixture of driving i do.

The argument is not mutually exclusive either way, same as to say that it is neither crap or brilliant. Simple truth is you are not going to admit that environment and how the car is used makes enough difference to explain how some people are getting bad figures, also the fact that there could be problems with your cars. My colleague had recently bought an identical Auris T180 because he was impressed with mine, but unfortunately he is not achieving more than 32mpg. I told him that his car probably has a fault as he assures me that he drives very gently most of the time... He is getting his car seen to next week.

So the point is there are factors involved here whether you like it or not, and the official figures are there as a guide and clearly it is achievable but some people will never achieve it due to these FACTORs.

[Bry]

Unfortunately, no matter how many people express their disappointment with this thirsty, under performing example of an engine, the Toyota "REPS" will try to shoot you down with claims that you cannot drive, you hate diesels, you hate Toyota etc etc!!!

They do not consider that some of us might just be able to drive a little incy bit and have much more experience, but more importantly, have many examples to compare to than them!

If I get 53mpg (claimed combined is 49.6) out of a 150 CDTi driving it in exactly the same manner I drive a T180 and it gets 39 (claimed 45.6) HOW THE HELL CAN IT BE MY DRIVING??? And the 150HP CDTi feels easily as quick!

Well if i and others can achieve the quoted combined mpg and above in the auris how can it be impossible?

There are 2 reasons why you wouldnt achieve it:

1) There is a problem with the engine in the car

2) Your driving style

Just because you might have driven 'millions' of miles does not make you a good driver in any way shape or form. And how can you say you have many more examples than anyone else on here, you do not know what anyone else on here drives or has driven in the past. Your just one of those people who has to be right all the time despite the fact there are people PROVING you wrong.

"Your just one of those people who has to be right all the time despite the fact there are people PROVING you wrong."

Like Pea's from a pod aren't we?

I agree with you, driving millions of miles safely doesn't necessarily make you a good driver it just makes you very experienced, universally recognised as one of the most important overall skill factors.

But having examples to compare to past and present is extremely relevant, because in those millions of miles there has never been a car that hasn't and doesn't achieve at least claimed figures, usually higher, consistently, day in day out without resorting to "special" driving styles. There is one common factor that stands out, the T180 DPF engine. in a like for like situation, it is at least 10% down against claimed combined figures compared to my comparisons.

I believe the reason is simple, the official mpg test will almost certainly have been carried out when the engine was NOT running a DPF regen cycle, unfortunately, in our hands it runs this regularly, hence at least 10% down in mpg against claimed. As compared to a non DPF engine of course!

You are shooting at thin air my friend... You can always come up with some far fetch reasons for why the official figures are better than what you can achieve, simple fact is there are people out there who can achieve this figure and there are some who can't. You being one that who can't... I being one that can get near to it since i am averaging 43mpg combined at this moment in time, and i know full well how hard and what mixture of driving i do.

The argument is not mutually exclusive either way, same as to say that it is neither crap or brilliant. Simple truth is you are not going to admit that environment and how the car is used makes enough difference to explain how some people are getting bad figures, also the fact that there could be problems with your cars. My colleague had recently bought an identical Auris T180 because he was impressed with mine, but unfortunately he is not achieving more than 32mpg. I told him that his car probably has a fault as he assures me that he drives very gently most of the time... He is getting his car seen to next week.

So the point is there are factors involved here whether you like it or not, and the official figures are there as a guide and clearly it is achievable but some people will never achieve it due to these FACTORs.

Please read the facts before you post replies, WHY IS THE T180 THE ONLY CAR I HAVE USED OUT OF DOZENS, THE ONLY ONE THAT GETS WELL BELOW CLAIMED? DPF I KNOW.

I did not start this complaint, I joined a long list of others, a longer list than those that are happy.

I bet your friend gets told there is nothing wrong with his car and ends on the list of unhappy 180 customers. How many duff 180's do Toyota make using your theory?

Finally I get 46 to 47 mpg average, albeit with a tuning box fitted. I got about the same as you before, and mine is a much heavier Avensis Estate, you need to get your looked at friend.

[T Sport 1978]

Unfortunately, no matter how many people express their disappointment with this thirsty, under performing example of an engine, the Toyota "REPS" will try to shoot you down with claims that you cannot drive, you hate diesels, you hate Toyota etc etc!!!

They do not consider that some of us might just be able to drive a little incy bit and have much more experience, but more importantly, have many examples to compare to than them!

If I get 53mpg (claimed combined is 49.6) out of a 150 CDTi driving it in exactly the same manner I drive a T180 and it gets 39 (claimed 45.6) HOW THE HELL CAN IT BE MY DRIVING??? And the 150HP CDTi feels easily as quick!

Well if i and others can achieve the quoted combined mpg and above in the auris how can it be impossible?

There are 2 reasons why you wouldnt achieve it:

1) There is a problem with the engine in the car

2) Your driving style

Just because you might have driven 'millions' of miles does not make you a good driver in any way shape or form. And how can you say you have many more examples than anyone else on here, you do not know what anyone else on here drives or has driven in the past. Your just one of those people who has to be right all the time despite the fact there are people PROVING you wrong.

"Your just one of those people who has to be right all the time despite the fact there are people PROVING you wrong."

Like Pea's from a pod aren't we?

I agree with you, driving millions of miles safely doesn't necessarily make you a good driver it just makes you very experienced, universally recognised as one of the most important overall skill factors.

But having examples to compare to past and present is extremely relevant, because in those millions of miles there has never been a car that hasn't and doesn't achieve at least claimed figures, usually higher, consistently, day in day out without resorting to "special" driving styles. There is one common factor that stands out, the T180 DPF engine. in a like for like situation, it is at least 10% down against claimed combined figures compared to my comparisons.

I believe the reason is simple, the official mpg test will almost certainly have been carried out when the engine was NOT running a DPF regen cycle, unfortunately, in our hands it runs this regularly, hence at least 10% down in mpg against claimed. As compared to a non DPF engine of course!

You are shooting at thin air my friend... You can always come up with some far fetch reasons for why the official figures are better than what you can achieve, simple fact is there are people out there who can achieve this figure and there are some who can't. You being one that who can't... I being one that can get near to it since i am averaging 43mpg combined at this moment in time, and i know full well how hard and what mixture of driving i do.

The argument is not mutually exclusive either way, same as to say that it is neither crap or brilliant. Simple truth is you are not going to admit that environment and how the car is used makes enough difference to explain how some people are getting bad figures, also the fact that there could be problems with your cars. My colleague had recently bought an identical Auris T180 because he was impressed with mine, but unfortunately he is not achieving more than 32mpg. I told him that his car probably has a fault as he assures me that he drives very gently most of the time... He is getting his car seen to next week.

So the point is there are factors involved here whether you like it or not, and the official figures are there as a guide and clearly it is achievable but some people will never achieve it due to these FACTORs.

Please read the facts before you post replies, WHY IS THE T180 THE ONLY CAR I HAVE USED OUT OF DOZENS, THE ONLY ONE THAT GETS WELL BELOW CLAIMED? DPF I KNOW.

I did not start this complaint, I joined a long list of others, a longer list than those that are happy.

I bet your friend gets told there is nothing wrong with his car and ends on the list of unhappy 180 customers. How many duff 180's do Toyota make using your theory?

Finally I get 46 to 47 mpg average, albeit with a tuning box fitted. I got about the same as you before, and mine is a much heavier Avensis Estate, you need to get your looked at friend.

The facts are there are people with positive experience and some with negative experience. What you experience is true but doesn't make it a universal truth. What you speculate about DPF might or might not be right, and the FACT is you are speculating. You are not qualified to say whether DPF is the reason or not. Thats fact.

I will update with what they said about my colleague's car.

[OldSkoO1]

well for someone who gets 42mpg mainly and doesn't have a problem with mpg I reset the mpg computer on my 20min drive in and through town. Resulting in 32.4mpg, 22mpg at one point.

As I said diesels are for higher miles. Short trips in town or in hilly areas will reduce mpg. If you can't get around 45mg on a good run then you have problems. And 80 on the m way doesn't qualify