1.2 TDI or 1.4 i

S

Stephan

Member
Hello,

I would like to ask you on dilemma which motor is the more economical.
I want buy A2 1.2 TDI or 1.4 i and convert to LPG.
The acquisition costs are not important. More important is cost-fuel per km(mile).

When I browsed in this forum I found that average consuption for 1.2 TDI is ~3,5l /100km and for 1.4 i is ~ cca 6,5 l ( I´m not sure of this numbers)

When the 1.2 TDI takes about 3 l it´s better to buy this one. But the reality is different.

It seems that 1.4 i is better ?


Thank you.


Now I have a car takes 7,5 l /100km LPG ~ 3 - 3,25 l/100 km petrol
 
The 1.2Tdi is a diesel so you might have problems converting it to LPG. It is also only available in LHD and the most practical source is Germany. It is the most economical A2 though.

RAB
 
Go for the 1.4TDI. Good fuel economy, adequate performance (75vs61) and widely available in RHD.:D
A bit offtopic: Diesel LPG conversion?? That is the first time i've heard about this. Petrol yes, but diesel?:confused: IMHO the LPG wouldn't be appropriate for the high compression rates used in diesel engines.
Any more info on the procedure?
 
Only 1.4 on LPG

Thx,

No I only tried to compare these motors.
If is it better buy 1.2 TDi - the most economical motor on diesel or 1.4 petrol and rebuild it on LPG.

And diesel LPG conversion? NO, perhaps.
I heard about this possibility, but it´s so expensive and after the conversion you can never use the motor on diesel, only gas. And it´s a problem in winter.

I think that the most economy variant is buy a petrol version and convert it to LPG. It costs only 1000 GBP.

Look here : http://www.spritmonitor.de/

You can find there a lot of statistics with average consuptions for A2

What do you think on this :

http://home.mobile.de/home/showDeta...=false&showModels=false&hideVehicleType=false


but pssst :)
 
i know having a stealth remap does improve the fuel consumption a little.

the a2 really needs a 6th gear. when im on the motorway doing 70mph (speedo reads 75mph) the rev counter is at 2750, which really eats the fuel up.

does anyone know after a remap what the revs read at 70mph?
 
re. "after a remap what the revs read at 70mph?"

The same unless wheel/tyre sizes changed so that gearing ratio is, in effect, modified
 
There is probably no way to install 6th gearbox ( from Polo...)
,,Maybe lengthen the gears ?,, That is a basic changeover 4 ecorace ....


With the tyres it´s complicated. We can use EcoContact for 15 - 17" but for original 14" ? Nothing... :)
 
Stephan said:
And diesel LPG conversion? NO, perhaps.
I heard about this possibility, but it´s so expensive and after the conversion you can never use the motor on diesel, only gas. And it´s a problem in winter.
Click to expand...

Most (or all ?) diesel LPG conversions mean running the engine on diesel AND LPG at the same time, not on LPG only. A diesel to LPG only conversion would mean converting the diesel engine into a petrol engine which would be entirely pointless. A 1.2Tdi would be much more (2X ?) economical than a 1.4 running on LPG and Audi probably made it as fuel efficient as they could within reason. Eight years later (10 for a Lupo 3L) you still cannot buy a more fuel efficient car.

RAB
 
Are you saying that it is possible to run diesel and LPG at the same time?
You have put a bug into my head :)
Nobody produces and knows such thing here in Czech....
I have checked few links and found that this solution should exist.
But I still can not believe it. I think it could be just a joke.
Does it really work? And how much does it cost?
Why nobody from a2oc does not produce such thing.....

There:http://www.go-lpg.co.uk/diesel.html
you find :

This can bring new problems of reliability and longevity. The crankshaft, bearings and connecting rods (to mention but a few components) were all designed to rev. at a lower rate. These components will suffer much higher stresses (stress increases at the square of RPM) at the increased RPM necessary to get sufficient torque when running on LPG. Mechanical breakdown may result in far less time, whilst increased wear and reduced component life are certain. Given the low overall savings achieved (to date) and the cost of the adaption ( often equal to that of an injected Petrol engine conversion) many miles would have to be covered before any real savings are realised whilst reliability has been reduced. This does not seem to be an economically viable alternative
 
Diesels can be converted to run on gas,it uses hi tech but its possible.
anything can be converted to gas.
It would depends how cheap you can get a 1.4 petrol.
and of course what miles you drive as well.
after all its only worth it if you do loads of miles.:)
 
longer gearing, sixth gear, already done. Search and you'll find it either here or on the German club's site.

Unfortunately, no longer gearing available for the petrols :(

Bret
 
Stephan said:
Are you saying that it is possible to run diesel and LPG at the same time?
You have put a bug into my head :)
Nobody produces and knows such thing here in Czech....
I have checked few links and found that this solution should exist.
But I still can not believe it. I think it could be just a joke.
Does it really work? And how much does it cost?
Why nobody from a2oc does not produce such thing.....

There:http://www.go-lpg.co.uk/diesel.html
you find :
Click to expand...

The same reference tells you that all conversions to LPG, without lowering the compression ratio and fitting spark plugs, require the use of diesel at the same time.

RAB
 
Do you know anybody who has a car that runs on lpg and diesel at the same time?
Shall I understand that six gear is only possible for diesel?
Thanks
 
I HAVE NEVER HEARD OF IT BEFORE :)

Good idea, It costs only 300 GBP with install in Czech and oil costs 0,5 GBP/L :D
But on the opposite side, the quality of diesel here is not good :mad:
I´ll see :cool:
 
Stephan said:
Hello,

I would like to ask you on dilemma which motor is the more economical.
I want buy A2 1.2 TDI or 1.4 i and convert to LPG.
The acquisition costs are not important. More important is cost-fuel per km(mile).

When I browsed in this forum I found that average consuption for 1.2 TDI is ~3,5l /100km and for 1.4 i is ~ cca 6,5 l ( I´m not sure of this numbers)

When the 1.2 TDI takes about 3 l it´s better to buy this one. But the reality is different.

It seems that 1.4 i is better ?


Thank you.


Now I have a car takes 7,5 l /100km LPG ~ 3 - 3,25 l/100 km petrol
Click to expand...


If you want extreme economy, you can add vegetable oil installation to 1.2 TDI. You have then an extra tank in boot, under false floor, and heater which warm vegetable oil. I saw A2 with more than 130k and such installation but with 1.4 TDI.
Have in mind that 1.2 TDI has an automatic gearbox which is not very reliable. So fuel saving you may easily spend for gearbox repair or replacement.
 
Forget LPG

The UK govt ran a powershift scheme because they thought CO2 emissions could be reduced by converting petrol to LPG - it turned out to be less economical and l/100km on LPG much higher than on petrol.

Cost of LPG in UK around 50ppl which is about half petrol.

Look on German forum for A2 1.4 petrol running LPG - not so much improvement on small engines - better to get an old V6 Alfa 164 or similar gas guzzler and convert - then you have room in the boot.

A2 1.2 TDI - actually the gearbox is reliable - it is hydraulic leaks and electronics that can go wrong but pretty easy to get parts and fix it yourself.

Also CO2 is lower than LPG conversion.

I have owned my 2001 car since 2002 and it's still the most economical car out there.

Convert to Veggie Oil using an Elsbett system and you have extremely low running costs.
 
Maybe the problem with this gearbox is that only few knows how to repair it. I heard that dealers advice is to replace it because they do not know how to fix it. That is why when i was looking for A2 i was trying to avoid 1.2 but now when I know some helpful friends on this forum I would consider 1.2. :)
 
ecoangel said:
A2 1.2 TDI - actually the gearbox is reliable - it is hydraulic leaks and electronics that can go wrong but pretty easy to get parts and fix it yourself.
Click to expand...

I would only agree with Lukas on this. We have 17 car years of ownership of VW/Audi cars (A2/Lupo 3L) with automated manual gearboxes and the only problems we have had are two leaks of hydraulic fluid which were easily repaired - apart from access on the A2!

RAB
 
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