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[Solved] Audi A6 C5 Avant 2.4 V6 Manual: Reliability, Maintenance Costs, Gas Conversion Tips & Advice

DaniLo_RS 124257 18
Best answers

Czy Audi A6 C5 Avant 2.4 V6 z manualem i LPG jest trwałe, co najczęściej się psuje i jakie są koszty utrzymania?

2.4 V6 w A6 C5 nie jest zły, ale to raczej przeciętny i dość kosztowny w serwisie silnik: trzeba liczyć się z droższym rozrządem, wyciekami, problemami z układem zapłonowym i cewkami, a także z kosztownym zawieszeniem w samym aucie [#17046030][#17041834][#17042413] Silnik 30V jest bardziej skomplikowany, a części oryginalne nie są tanie, choć używki są do zdobycia [#17046030] Na plus jest dobra kultura pracy i to, że 2.4 nadaje się do LPG [#17046030] Kilka osób uważa, że 1.8T jest zwykle tańszy w utrzymaniu i też dobrze współpracuje z gazem, ale jeśli szukasz V6, to 2.4 jest akceptowalnym wyborem pod warunkiem kupienia zadbanego egzemplarza [#17042410][#17042605] Najważniejsze jest więc kupić auto w możliwie najlepszym stanie, bo przy słabym egzemplarzu koszty szybko rosną [#17042605][#17048229]
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  • #1 17041774
    DaniLo_RS
    Level 8  
    Hello, I am trying to buy an Audi, I caught the eye of the V-engine 2.4, of course manual (I'm not interested in the subject of the machine), gas with gas so-called. Avant, I wanted to ask you how it is with this engine, is it very emergency, which usually breaks down, I will add that I never had this brand, and I do not want to buy something about which I have no idea about the operation of parts and maintenance costs, let me read a lot on various forums but most of them are arguing over what better than to advise, I also thought that I would post my own post, and certainly someone will also be useful, of course the pre-lift game is involved because the po-litt is not in the current moment I also expect answers. I also ask you, without stupid comments, of the type, "gas is for lighters not for the car", because not everyone can afford to ride on "clean gasoline". Thanks greetings.

    If bad department, then please move to the appropriate department.
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  • #2 17041807
    andrzej20001
    Level 43  
    How to take it 2.8, the cons in these cars is expensive timing service.
  • #3 17041834
    Kantylena
    Level 24  
    Search with 1.8T 20V, here in the case of 2.4 or 2.8 road service, such cows especially at 2.4 somehow sensational not going, smoke like a dragon, etc ..
    For this service - timing, leaks, power drops

    As for me, 6 gars are just a BMW 320i, etc..323i

    V6 from VAG was ok as young after years is sometimes bad, and the cost of expensive services.

    Also, take 1.8T is the usual old 1.8 turbo, 6 gars is always more expensive.

    Regardless of the engine, watch out for the suspension, because on good parts it costs easily from 2,000 to A3 on the Golf disc ;)

    An additional thing is the rumors that the coils like to sit down quickly.

    Generally bad this engine is not but costs can be huge.
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  • #4 17042158
    DaniLo_RS
    Level 8  
    It depends on how it goes, I will find 2.8 in the manual I will buy it, if not I will stay at 2.4, 1.8T, I'm not convinced about turbocharged cars, that's why I chose 2.4 without turbo, I know 1.8T can be turned up even for 180-200km but as I say I'm not convinced about the turbo, maybe sometime in the future, but not for now, just as I do not have problems with the services because I have my uncle mechanics also prices will not be high, only I mean the prices of parts more or less expensive for this car and failure rate.
  • #5 17042410
    kakibara
    Level 35  
    You ask about the prices of parts - and what will go wrong?
    I used to have a five-year A8 - today even 25-year-olds are and I probably would not have decided to buy - 3.0 tdi spare parts a few thousand zlotys.
    But when I had the Bmw e39, for example, I never made timing and I was forced to buy a water pump and worked for a long time for PLN 100.
    So it's hard to deal with something - 1.8t, according to some, is 2 weeks cheaper to maintain, average 12l smokes, the turbo is maintenance-free and goes better than 2.4. Works with lpg.
    But everything can really be compared on the a6 forum.
    Buy in good condition will be low spending - easy to write.
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  • #6 17042413
    andrzej lukaszewicz
    Level 42  
    How to take a V-6 is with power above 200 horsepower, not 165/170 horsepower. Burning may not be big, but it does not go, expensive timing, candles, ignition system too, and there is nothing to go especially in a large car such as A6. On the plus side is the working culture, but the engines are average and unnecessarily complicated (eg 30V).
    How should I take the V-6 from those years and in terms of operating costs, it's only Japanese (maxima, legend lexus GS etc.). 3.0-3.5L engines, 210-270 hp and combustion lower than this 2.4.
  • #7 17042605
    Kantylena
    Level 24  
    DaniLo_RS wrote:
    As for 1.8T, I'm not convinced about turbocharged cars


    Why are not you convinced? Turbine today is not a problem, remember that in 1.8T there is a "only" turbine, in such a 2.4 or 2.8 there are many things that can hit your pocket and the cost of services are high
    Do as you think and, above all, find something neat, because there is no shortage of offers for a couple of thousands of such 2.4, not without reason.
  • #8 17043065
    DaniLo_RS
    Level 8  
    I'm just not convinced and that's it, I will not explain it because too much writing ;) , friend again said that his was a 1.8T nothing was going where in the a6 1.8T engine has 150 and 180 km, a3 is much lighter than a6. I do not know myself anymore and I have a dilemma.

    As for a colleague who writes about v-6 above 200 km, I will remind you again what I wrote at the beginning, DO NOT GIVE ME ANYTHING WHAT IS FOR ME WHILE ATTENTION, it is necessary to add a minimum of 5-6 thousand for eg 3.0 v6 220km, most often it's polyfts, I do not have that much money and I can not afford everyone, I'm only asking about 2.4 and 2.8 because in total the same engines are only 20-30 km more ...
  • #9 17043250
    lukashb
    Level 39  
    DaniLo_RS wrote:
    I'm only asking about 2.4 and 2.8 because in total the same engines are only 20-30 km more ...
    ... and some 4 liters of LPG more per 100km.
  • #10 17043575
    DaniLo_RS
    Level 8  
    Just 4L more burning is somehow not a cosmic price, 10 PLN more, I honestly now have a Honda Civic 1.6 V-Tec 125km (without confusing with 1.6 V-Ti 160km), but with a "boot" it can take a little gas as any car, it also depends on how much you slept.
  • #11 17044329
    andrzej lukaszewicz
    Level 42  
    DaniLo_RS wrote:
    , DO NOT GIVE ME ANYTHING WHAT IS FOR ME IN THE MOMENT OF THE PRESENT EXCEPTIONAL,

    This is why you are pushing yourself into maintaining the engine and (not always justified) expensive brand,. Buy a sonata W R4 2.4 164 hp (not much less than 2.4 audi) replace the oil, timing and "weld the mask" for 15 thousand. for the next exchange. For 12,000 you will buy the audi from 2000, and the sonata 2005-6. When it comes to reliability, I would prefer a sonata, with a small extra charge with a reliable 3,3 235 hp, timing chain and burning of 11 gasoline / 13 gas in the machine, 40 HP more than 2.8 with audi ... So sometimes it can be worse and cheaper. Well, unless it must be an audi and end :!:
    I assume that if it has to cost and burn, let it go though.
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  • #12 17045764
    DaniLo_RS
    Level 8  
    I say yes, I do not only look at the car going, I like the car and it does not have to be a speed demon, for example panamera gts 450 km, as for Sonata, I do not like the car so what is the sense of buying it for me? ?? Why should I spend money in something I do not want? I just asked about the audi because firstly I want to try a new brand, and secondly, I already had a Japanese car, I do not know why you can not find anything on the forum about a given engine, everyone pushes in any other cars ... maybe it was better not to ask just buy and after the problem ...
  • #13 17046030
    andrzej lukaszewicz
    Level 42  
    You want to buy it and buy it anyway, no one will forbid you to spend your money on the forum as you like, but do not compare the V-6 from Japan from those years with German - in my opinion the difference was very large, especially in reliability.
    To sum up 2.4, the average engine, not without flaws (frequent leaks, ignition system failures), relatively complicated ("multi-valve" did not give anything except production costs and complications, just like the twin spins alpha). Advantages: suitable for LPG, relatively high work culture (like most V-6s) a slightly higher torque (achieved at lower revolutions) than similar R4 units, ease of access to used parts, because new and original ones are not as cheap as that it might seem. European engines have power on the shaft, and Japanese (certainly on the US market) power on wheels and hence the impression and real performance of cars with engines of the same power and mass of cars on the plus for the Far East.
    The WV group from popular petrol engines except outdated but durable 1.6 and 2.0 8V engines had one successful one: the 1.8T mentioned, the rest of them were quickly verified by the reality of duds.
    In addition, when you decide on audi you buy a car older by 5 years than other brands with a mileage probably 100kkm and even more, because the countrymen buy this brand in the dark with eyes closed, in the evening at gas stations in the light of the "soda" - I have seen more than once.
    Asking about the costs of exploitation I personally would not take an 18-year-old car, being able to buy 12 years for this price, and what is different to the majority of German compatriots, and practicing - I miss the "German" for years with a wide arc .
    Buddy had once C4 with 2.8 30V 193KM, and the cost of original candles, WN coil, coils were huge for this time (I know, because then we exchanged comprehensively the entire "ignition", as then I had the "invention" sigma 3.0 12V 177HP to my everything was 3 x cheaper.
    Both cars in the estate, but the Mitsubishi surprisingly got better despite 16KM less power and 18 valves less. :D
  • #14 17047841
    DaniLo_RS
    Level 8  
    I understand, but anyway I will stay with the audi, everyone is young and wants something new in life, I never had an audi I want to try this brand and the end, I have Honda, is much older than the audi I want to buy because from 1993, I ride this and I am very happy, I do not have anything to Japanese cars, what's V-Tec is great, it gives a lot of fun, the costs of maintenance can not be big like in audi, but I want to change to audi, I will definitely buy audi for sure Honda again but at the moment it is unattainable for me Honda Accord VIII in the Type-R version because this car is my dream, one of the two brands that I love from the Japanese market, the other is the Nissan Skyline R34.
  • #15 17047923
    Przemek2011
    Level 17  
    DaniLo_RS, if you have an uncle mechanic and he is supposed to service you this car then you can not ask him about the costs of maintaining this car? Everyone tells you that the 2.4 engine is not the best choice in this car model, and you insist that you buy a car with this engine, so I think the whole discussion is pointless, because you know better.
    Since you do not have money for a younger / different car, ask yourself if you can afford to maintain this car, and only think about buying it. For this, if you are a young driver and you want to buy a car with such a large engine, also take into account the cost of the insurance, which for a young driver may not be small.
  • #16 17048075
    DaniLo_RS
    Level 8  
    Uncle only repairs cars, has never been an audi user, how does he know how much it costs, everyone who comes to him has parts with him, does not look at who paid how much for parts, hardly told me about the car, only that The timing can be a bit expensive, unless I put together parts from the upper shelf of fields SNR + INA can be cheaper, he also mentioned the rocker, I also preferred to make sure in the forum, secondly I can spend up to 10,000 on the car, there is a lot 6-10 cars, even if I buy for these 6 thousand I prefer to buy cheaper and do everything myself and be sure than to trust someone just and give over 10 thousand for a car, secondly, in the question is written that no can I afford this car ??? I wrote that I can not afford a post-it is true that I have to give from 14-18 thousand of what I have been looking at, and I am generally about failure, not about how much a given part costs, I do not know if it is so difficult to read with understanding...
  • #17 17048229
    Cobrat
    Level 22  
    Do not buy something from the lowest price level ... For life you will curse the brand ... As you do, buy something tucked, but sensibly ;) .
  • #18 17049311
    andrzej lukaszewicz
    Level 42  
    DaniLo_RS wrote:
    I understand, but I will stay with the audi anyway, everyone is young and wants something new in life, I have never had an audi that I want to try this brand and the end,

    Another topic from the series: "I have an idea and admit to me that I am right, I do not expect other statements".
    As you are determined - buy, I also had 18 years old and older cars, everyone, even older cars can be driven and be satisfied, especially with a certain portfolio and technical culture. Good luck.
  • #19 17718262
    DaniLo_RS
    Level 8  
    The car has been purchased, I chose the 2.4 engine, I have more than half a year and I am satisfied, the prices of the parts are also not large, from what friends wrote above, the subject can be closed, thanks to everyone for the info. Greetings.

Topic summary

✨ The discussion revolves around the reliability and maintenance costs of the Audi A6 C5 Avant 2.4 V6 manual, particularly focusing on the engine's performance and potential issues. Users express concerns about the engine's reliability, noting that while it is not the worst option, it has common problems such as timing service costs, ignition system failures, and oil leaks. Comparisons are made with other engines, particularly the 1.8T turbocharged variant, which some users find more appealing due to lower maintenance costs and better performance. The conversation also touches on the feasibility of converting the engine to run on LPG, which is seen as a cost-effective solution. Ultimately, the original poster decides to purchase the 2.4 engine, expressing satisfaction with the choice after several months of ownership.
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FAQ

TL;DR: Shopping an A6 C5 2.4 V6 manual on LPG? Expect the 2.8 to drink about +4 L LPG/100 km; as one expert notes, "…and some 4 liters of LPG more per 100km." This FAQ distills reliability, costs, and LPG tips. [Elektroda, lukashb, post #17043250]

Why it matters: It helps buyers gauge 2.4 V6 reliability, maintenance budgets, and LPG setup before committing.

Quick Facts

Is the Audi A6 C5 2.4 V6 reliable for daily driving?

It is an average, service-sensitive engine with smooth V6 manners. Owners note frequent oil leaks and ignition failures. The 30‑valve layout adds complexity and labor time. Positives include good LPG compatibility and torque at lower revs. Reliability depends on documented maintenance. Inspect carefully and verify recent service before buying. [Elektroda, andrzej lukaszewicz, post #17046030]

What maintenance costs should I plan for the 2.4 V6 timing job?

Expect a high bill. As one member put it, "the cons in these cars is expensive timing service." Verify timing history before purchase.
  1. Ask for invoices and recorded mileage/date of last timing service.
  2. Check for service stickers or markings on covers.
  3. Inspect for leaks around the front of the engine. If absent, budget to do it immediately after purchase. [Elektroda, andrzej20001, post #17041807]

What weak points should I check before buying an A6 C5 2.4?

Focus on leaks, intermittent power drops, and ignition coils. Review timing service proof and look for oil seepage. Inspect front suspension arms and bushings; quality parts are costly. Many buyers also flag coil reliability. A thorough test drive and scan can reveal misfires or power loss. [Elektroda, Kantylena, post #17041834]

Does the 2.4 V6 handle LPG conversion well?

Yes. Owners list “suitable for LPG” as a clear advantage. Choose a quality sequential system and calibrate fueling under load. Proper tuning preserves drivability and engine smoothness. Plan regular valve clearance checks only if your installer advises it. [Elektroda, andrzej lukaszewicz, post #17046030]

How much more does the 2.8 V6 consume on LPG than the 2.4?

Plan for about +4 L LPG per 100 km for the 2.8 compared with the 2.4. One member summarized it as “and some 4 liters of LPG more per 100 km.” Factor that into annual fuel budgets. [Elektroda, lukashb, post #17043250]

Is the 1.8T a smarter buy than the 2.4 V6?

Some owners prefer 1.8T for lower upkeep. Reported average fuel is 12 L, and it runs well on LPG. In that view, the turbo is essentially maintenance‑free and performs better than 2.4. “1.8t… average 12l smokes… goes better than 2.4. Works with lpg.” [Elektroda, kakibara, post #17042410]

Are ignition coils and plugs costly on the V6, and what fails?

Original plugs, coils, and the WN coil are cited as expensive. One owner noted “the cost of original candles, WN coil, coils were huge.” Ignition system failures also appear in owner reports. Budget for quality parts and replacement if misfires occur. [Elektroda, andrzej lukaszewicz, post #17046030]

How about insurance costs for young drivers on a 2.4 V6?

Expect higher premiums due to engine size and vehicle class. A member advises checking quotes before buying. For a young driver, insurance “may not be small.” Get multiple quotes and factor them into your total cost. [Elektroda, Przemek2011, post #17047923]

Are parts expensive for the A6 C5 2.4 V6?

An owner who bought the 2.4 reported satisfaction after over six months. He added that "the prices of the parts are also not large." Shop smart and use trusted suppliers to control costs. [Elektroda, DaniLo_RS, post #17718262]

Are the 2.4 and 2.8 basically the same engine besides 20–30 hp?

Buyers often view them as closely related V6s. One discussion framed the 2.8 as offering only 20–30 hp more. Choose based on fuel budget, availability, and your performance needs. [Elektroda, DaniLo_RS, post #17043065]

Should I avoid the cheapest A6 C5 listings?

Yes. Avoid bottom‑of‑market cars to prevent cascading repairs. One member advised, “Do not buy something from the lowest price level… buy something tucked, but sensibly.” Pay for condition and documentation over low asking price. [Elektroda, Cobrat, post #17048229]

What should I expect for suspension costs and checks?

Quality front‑end parts add up. Budget around 2,000 PLN on smaller VAG models, with A6 higher. Inspect arms, ball joints, and bushings for play. Prioritize OEM‑grade components for durability. Test on rough roads to hear knocks or clunks. [Elektroda, Kantylena, post #17041834]

Is the 2.4 V6 underpowered for the A6 C5?

Some owners find the 2.4 “not going sensationally.” They also note higher fuel use when pushed. If you want stronger performance, consider alternatives or the 2.8, but budget for extra fuel and service. [Elektroda, Kantylena, post #17041834]
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