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Thread: How does B7 2.0 tdi compare to B6 2.5tdi

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  1. How does B7 2.0 tdi compare to B6 2.5tdi 
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    Hi

    Hope someone can offer up some advice.

    Just wondered if anyone had direct experience of the older B6 2.5tdi and the B7 2.0 tdi and could give an appraisal of the two. The 2.0tdi seems much more economic, but wondered how big the driving performance difference was between them?

    Thanks
     
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  2. Re: How does B7 2.0 tdi compare to B6 2.5tdi 
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    Hi,

    Please be aware you can get:

    B7 140 bhp 2.0 TDI
    B7 170 bhp 2.0 TDI

    B6 150ish bhp 2.5 TDI
    B6 163 bhp 2.5 TDI
    B6 180 bhp 2.5 TDI

    Quattro is also available on some of those models too. Please let us know which ones you are talking about but in the mean time...

    I've owned a B6 2.5 TDI Quattro and I've driven a B7 2.0 TDI Quattro (just for 2 days as a courtesy car).
    I was mighty impressed with the 2.0's power - bags of grunt once the turbo kicks in.

    Compairing the power output of these two engines is the wrong thing to do (the 2.5 TDI Quattro has 180bhp but is a heavier lump) instead, you should make these comparisons:


    Refinement: the V6 2.5 is so much more refined than the 4cyl 2.0

    Handling: the 2.0 is a much lighter engine than the 2.5, meaning the 2.0 is a noticeably better handling car (it's less nose-heavy).

    Efficiency: The 2.0 is has common rail injection whereas the 2.5 doesn't (its a much older engine design). As aforementioned; the 2.0 is a lighter block so it takes less fuel to lug about!


    The key point here is: if you want refinement, get the V6, if you want the best economy possible, get the 2.0

    I chose to suffer slightly on fuel economy the the refinement of a V6 - and I made the right choice

    Hope that helps.
    Al.
    [ My Cars: 2011 Caravelle SE TDI LWB | 2015 A1 1.4 TFSI | 2017 Jag F-Type R 5.0 V8 Supercharged ]
    [ Past Audis:
    A6 S-Line 3.0
    V6 TDI Qttr | A4 3.0 TDI Qttr S-Line | S6 4.2 Qttr | A4 2.5 V6 TDI Qttr Sport | A4 1.9 TDI Qttr S-Line | A4 SE 2.0 TFSI Quattro Avant | 2.0 TFSI Roadster ]
    [ Past VWs: Mk1 GTI Cab | Mk3 2.0 Cab |
    Mk3 VR6 | Mk4 R32 | Mk4 V6 MoFo | Mk4 Golf 1.9 TDI| Mk4 Supercharged 2.0 6-speed | VW Touran 2.0 TDI DSG ]
     
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  3. Re: How does B7 2.0 tdi compare to B6 2.5tdi 
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    Could'nt put that better than toff ! If you are a cheapskate(wich we all are as we drive diesels !) go for the 2.0L diesel. Being the lighter engine will offer a better ecconomy and will handle fairly well. It does have its problems as its a new engine though. For any other reason go for the v6... It is in a different league compared to the 4pots and it has massive torque due to the displacement and because its a v6. The 2.0L diesel is an over-engineered engine wich rellies on the turbocharger and increased fuel pressures to deliver its grunt and its not smooth at delivering the power- its either ON boost or Off boost wich you will find it wont pull unless you are in the right gear with the right ammount of revs. The v6 on the other hand is soo smooth and wont give you a wiplash every time you go for a drive. The 2.5 tdi is a fairly old design wich is limited by the VE fuel pump and the restricted ECU but it will deliver a punch in the 180Bhp quattro guise. The later 2.7 and 3.0L tdi are common rail engines and you wont believe its a diesel when driven- soo quiet and refined. I would take i drive in either car you fancy and see wich one fits your bill. The v6 is also higher maintenance but will allways put a smile on your face !
     
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  4. Re: How does B7 2.0 tdi compare to B6 2.5tdi 
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    It's intersting to hear so many good reviews about the B6 2.5TDi Quattro as I own one, albeit an Avant (Latin for pretend estate car), the sport model with 180bhp. To set the cat amongst the pidgeon's I hate it! I thought long and hard about going diesel and I fell in love with the concept and the crystal blue metallic with black leather, but as driving experiences go it's ****! It's a FASH car and I think it's rough, unrefined, slow, nose heavy! It nearly killed me and the family on a round-about the other day. I get about 32 mpg out of it. Servicing is extortionate. In the last year and thank goodness the company pay for my servicing, I have had four tyres, front pads and discs, the rears have about had it and a new rear roll bar.

    What else don't I like, for a sport model there is nothing crisp about it, the steering is remote, the power delivery is still subject to being "on-boost" the suspension is soft and floppy, it is darn near impossible to change gear smoothly and likes to crunch into second. The centre consul get's in the way of your nee and for an estate car it's pretty useless as well, I can't even get a basic Mclaren buggy in the boot unless it's at an angle otherwise the tailgate bounces on it and then you have to wait 30 seconds for the boot lock servo to reset itself! My Mum's Honda Civic 2.2CTDi has more room in it, goes better, is more fuel effecient and the car tax is half. You have to pay £210 per year for the 2.5. I am guessing the 2.0 will be £110.

    The nice things are on a long motorway journey it is effortless and comfortable. But, around town, bring back my Leon Cupra please!!!!!
     
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  5. Re: How does B7 2.0 tdi compare to B6 2.5tdi 
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    To be fair you don't buy an A4 Avant for it's load lugging abilities, but it's stylishness and top notch interior. Are you pretty tall hoops, I have no problems with the centre console and my knees.

    But yes it is an excellent car on the motorway, esp. if you have cruise control too.
    2007 MK5 Golf GT TDI 140ps Diamond Black
    2004 A4 Avant S-Line 1.8T 190ps Avus Silver w/black optics
    1997 MK3 Golf GTI 16v Anniversary Diamond Black- now gone!
     
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  6. Re: How does B7 2.0 tdi compare to B6 2.5tdi 
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    How did it nearly wipe you out Hooper, did the Quattro fail? (that happened to me when cornering hard - but then again, it was a CAT-D car with several hidden problems!)

    This may interest you: My B6 2.5

    I have to admit that the centre console does get in the way (on the B7's too - since they are essentially the same inside!)

    When I first drove an A4, it bothered me quite a lot but now I'm accustomed to it, I no-longer notice it. My Golf Mk.4's had bags more sideways leg room!

    Al.
    [ My Cars: 2011 Caravelle SE TDI LWB | 2015 A1 1.4 TFSI | 2017 Jag F-Type R 5.0 V8 Supercharged ]
    [ Past Audis:
    A6 S-Line 3.0
    V6 TDI Qttr | A4 3.0 TDI Qttr S-Line | S6 4.2 Qttr | A4 2.5 V6 TDI Qttr Sport | A4 1.9 TDI Qttr S-Line | A4 SE 2.0 TFSI Quattro Avant | 2.0 TFSI Roadster ]
    [ Past VWs: Mk1 GTI Cab | Mk3 2.0 Cab |
    Mk3 VR6 | Mk4 R32 | Mk4 V6 MoFo | Mk4 Golf 1.9 TDI| Mk4 Supercharged 2.0 6-speed | VW Touran 2.0 TDI DSG ]
     
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  7. Re: How does B7 2.0 tdi compare to B6 2.5tdi 
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    Quote Originally Posted by toff View Post
    Hi,

    Please be aware you can get:

    B7 140 bhp 2.0 TDI
    B7 170 bhp 2.0 TDI

    B6 150ish bhp 2.5 TDI
    B6 163 bhp 2.5 TDI
    B6 180 bhp 2.5 TDI

    Quattro is also available on some of those models too. Please let us know which ones you are talking about but in the mean time...

    I've owned a B6 2.5 TDI Quattro and I've driven a B7 2.0 TDI Quattro (just for 2 days as a courtesy car).
    I was mighty impressed with the 2.0's power - bags of grunt once the turbo kicks in.

    Compairing the power output of these two engines is the wrong thing to do (the 2.5 TDI Quattro has 180bhp but is a heavier lump) instead, you should make these comparisons:


    Refinement: the V6 2.5 is so much more refined than the 4cyl 2.0

    Handling: the 2.0 is a much lighter engine than the 2.5, meaning the 2.0 is a noticeably better handling car (it's less nose-heavy).

    Efficiency: The 2.0 is has common rail injection whereas the 2.5 doesn't (its a much older engine design). As aforementioned; the 2.0 is a lighter block so it takes less fuel to lug about!


    The key point here is: if you want refinement, get the V6, if you want the best economy possible, get the 2.0

    I chose to suffer slightly on fuel economy the the refinement of a V6 - and I made the right choice

    Hope that helps.
    Al.

    Thanks for all the comments, just the sort of thing I was after.

    Comaprison for me would be ebtween
    B6 163 bhp 2.5 TDI
    B7 140 bhp 2.0 TDI

    The likelyhood is that i will go for the B6 2.5 due to budget, but I have seen a few tempting B7's which have the allure of the new styling etc. but i don't want to base my decision purely on that and tech data. Real life opinions are much better, which is why these forums are so good.

    Thanks for all you help
     
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  8. Re: How does B7 2.0 tdi compare to B6 2.5tdi 
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    If it's any more help, my VW Audi specialist (non-franchise) advised me to get the 1.9 or 2.0 before I got mine. I have now found a new Audi specialist as I have moved house and he likes the 2.5 for it's torque but sings the praises of the 4-pot. I think the comment above says it all, the 4-pot is a newer common rail the 2.5 is not and it shows. the 2.0 is nearly as powerful and much more economical. The other bonus is that the 1.9 and 2.0 are easily tuneable. You can get the 2.0 (140) taken to 190 with just a Revo remap. Revo don't do the 2.5, this is because either they don't get much out of it to make it worth it, or it gets really smokey. You can get a PSi Power box but it is a hard wire into the management board. (Not sure I like that idea!)

    If I could turn back time I would go for a 2.0tdi S-Line, ideally the 170ps, don't need the 4wd unless you live on a farm and even then the car has not got enough ground clearance! Unless you go for an RS4 but that's another ball game......one day!

    A friend of mine used to have the 150ps in a Golf and that was a flying machine.
     
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  9. Re: How does B7 2.0 tdi compare to B6 2.5tdi 
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    Hooper, i know for a fact that the 1.9 tdi engine is good(pre PD) and economical as well. The PD had a bad habbit of eating the camshaft lobes due to impropper oil uses(most cars on Long Life service intervals) same with few particular v6 tdi between late 1998 to 2003... The PD engine was a technological "Dead End" for vw mainly due to the fact that they could offer performant diesels at cut prices compared with the likes of Mercedes or BMW( wich had common rail engines since 1998) and the emmissions were not that stringent so the engines could pass the tests with minor modifications. The audi 3.3Tdi was also introduced in europe in 1999 and that was a cracking CR engine pushing close to 240Bhp. They did not sell many as the a8 was an expensive limousine and many liked the big v8 petrol engines ! The v6 is easy tunable to over 240Bhp, its just too torquey for the 6speed gearbox and the clutch does not stand a chance when pushed over 450Nm. The generic remaps are only able to take the 150Bhp to about 180Bhp and the 180Bhp to no more than 210Bhp while keeping the torque fairly stock. The PSI Motorsport box does needs removing the plugs to the ECU-fits inline with the ECU- and it requires a tap into one of the pumps wires and also a negative feed. The beauty with the powerbox is it fully adjustable and you can customise the level of torque and Bhp via jumper conectors. As for fuel economy, do not forget you are hauling over 1500Kg+ of german engineering and all the toys seep power. For normal pottering round town the 4pot is ok but, on the motorway, the v6 is in its own element and there arent many petrol engines who can accelerate faster from 80 to 120 mph...The 2.0L tdi engine is a flop compared with the old 1.9 and they are burning oils and are not so economical as the 1.9 PD tdi. They also had problems with the oil pumps and there is a chap on here who had 3 replacement engines under waranty in 30K miles due to failed oil pumps. Hope the new CR fare better... The new v6 are bulletproof...
     
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  10. Re: How does B7 2.0 tdi compare to B6 2.5tdi 
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    Dudes.. I'm dyslexic! Please do me a favour and use the return key more often

    Further to adamss24's thoroughly comprehensive write-up; you can get remaps (like mine from Motech) that only kick-in at 50% load or 50% acceleration.

    Mine actually makes me drive my 3.0 more sensibly most of the time! I only really boot it on the occasional overtake.. it's my baby and I treat it nicely Because it's auto, the torque converter limits the power throughput - it's not as susceptible to failure as a clutch (so I've been told).


    Anyhow.. back to your dilemma. If it's the 2.5 163bhp non-quattro, then I personally would definitely take the 2.0!

    I say that because the 2.5 Quattro is a very accomplished car in my opinion (Quattro undoubtedly makes a nice difference to everyday driving, not just in the wet or when it's icy). No Quattro, a heavy lump with only 163bhp.. I'd rather suffer slightly less refinement in the punchey, modern and comparatively lighter 2.0

    I know this may sound daft, but if you're not fussed about Quattro, have you looked at the Skoda Superb 2.5 V6 TDI? I know it's not such a premium brand as Audi, but it's the same engine as the A4 163bhp and you'll probably get more bang for your buck!



    Al.
    [ My Cars: 2011 Caravelle SE TDI LWB | 2015 A1 1.4 TFSI | 2017 Jag F-Type R 5.0 V8 Supercharged ]
    [ Past Audis:
    A6 S-Line 3.0
    V6 TDI Qttr | A4 3.0 TDI Qttr S-Line | S6 4.2 Qttr | A4 2.5 V6 TDI Qttr Sport | A4 1.9 TDI Qttr S-Line | A4 SE 2.0 TFSI Quattro Avant | 2.0 TFSI Roadster ]
    [ Past VWs: Mk1 GTI Cab | Mk3 2.0 Cab |
    Mk3 VR6 | Mk4 R32 | Mk4 V6 MoFo | Mk4 Golf 1.9 TDI| Mk4 Supercharged 2.0 6-speed | VW Touran 2.0 TDI DSG ]
     
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