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Need TDI vs TFSI advice for A6 order

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Old 01-18-2014, 08:48 PM   #1
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Default Need TDI vs TFSI advice for A6 order

Thanks to all those contributing to a great forum-I've gleaned a lot of valuable information from this site, especially the ACNA 6% MSRP discount. I'm about to finalize a special order A6 within the next 3 days, and I'm having a really tough time deciding between the TDI and 3.0 TFSI despite having researched them both fairly extensively. I've briefly test driven both cars twice, but could not tell much difference between them in those short drives in busy traffic. I live in the north and drive just under 20K annually, about 75% highway. I plan on keeping the car a long time, at least 6 years. I've never owned a diesel before.

For the record, here's the car I'm ordering: special order paint estoril blue crystal, prestige trim, LEDs, driver assist, 19" sport package, cold weather package. Basically trying to build a semi-economical faux S6.

I understand the break-even economics of the TDI, for me around 90K miles or 4 1/2 years. My decision between the two engines I want based on which is the most satisfying to drive long term. What real world mileage are A6 drivers seeing? I'm usually not an aggressive driver, but I'd like to have reasonable power on tap. I'd appreciate the thoughts of both TDI and 3.0 TFSI A6 owners on how they like (or don't like) their engines.
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Old 01-18-2014, 09:50 PM   #2
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I'm going to wager you won't get too much help from the responses to this one because we probably all love our A6s and the engines in our A6s too. But I'll start off the parade. I picked up my A6 TDI Dec. 5 and have about 2K miles on it. I love the TDI and am happy I made the choice. That said, I couldn't tell much difference between it and the 3.0TFSI for my driving style which is much like yours. I was in the same quandary because the 3.0 TFSI has to be one of the smoothest, silkiest, most responsive engines in the world.

I do a lot of continuous low speed driving and a fair amount of it on hills. I think the TDI will serve me better for that mission. It remains to be seen if fewer parts in the diesel translates to less maintenance. Somebody here said that someone who buys a $60K+ car does care much about gas mileage. Could be true but I figured if the two cars were so close in performance why not opt for the greener choice. I have averaged almost 37MPG on my first four tankfuls. Do I feel like I am saving the planet? No? I'm happy with my choice and to speak to your question I really like the TDI. I should note that I drove a 2006 Jetta TDI for 7 years so I am comfortable with diesels, in fact I love diesels.

I would point out that there is a lot more experience with the A6 TFSI than with the TDI in the US so it's probably fair to say what you hear from TFSI drivers is going to be more representative of user experience than the few low mileage TDI drivers.

You are going to love this car whichever engine you pick. Nice order specs!
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Old 01-18-2014, 09:52 PM   #3
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Sorry the quote was somebody that spends more than $60K isn't going to care much about fuel mileage.
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Old 01-19-2014, 02:53 AM   #4
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And here we go again...yet another TDI vs. TFSI thread.
Gentlemen, (re)start your engines.
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Old 01-19-2014, 03:07 AM   #5
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I had a 2010 3.0T prior to trading up for a new TDI. I do about 15k miles/year with a 40 mile daily round-trip commute that's probably 75% highway (@ 75-80mph avg) and 25% city - with my 2010, I was averaging right around 20-21 mpg and now with the TDI I'm averaging 30-31 mpg after 6,000 miles, and easily getting over 500 miles between tank-ups.

For me, the appeal of the TDI wasn't so much to save money on gas and figuring out the break-even point for the added $2,400 "investment" in the TDI - as others have said, for those spending $60k +/- on a new car, you're probably not overly concerned about annual fuel costs. What I like about the TDI is the torque, the longer range (fewer fill-ups) and the fact that it is considered a "green" vehicle. As I was reading the latest edition of Quattro Quarterly (which focused heavily on TDI's) last night, I commented to my wife that in the 4 short months I've had the car, I've become a diesel-fan for life.

Based on your described commute and the fact that you're doing 20k miles/year, I think the TDI is the easy, right choice. BTW, nice build configuration - you didn't mention your interior color choice, but with the estoril and wanting a "semi-economical faux S6", I would say go with black interior with the black headliner option, and brushed aluminum trim for a sportier look.
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Old 01-19-2014, 06:08 AM   #6
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..I commented to my wife that in the 4 short months I've had the car, I've become a diesel-fan for life.
I've said it before and I'll say it again:

"Once you go diesel, you never go back."
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Old 01-19-2014, 07:01 AM   #7
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Ward's has named the 3.0T one of the ten-best engines in the world for the past 5 years--they did it again in 2013. An unheard of accomplishment.

http://wardsauto.com/auto-makers/war...ges-discussion
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Old 01-19-2014, 08:05 AM   #8
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I've said it before and I'll say it again:

"Once you go diesel, you never go back."
Completely agreed. I completed a roundtrip from Phoenix to San Diego in 24 hours and in total, the distance traveled was 795 miles. I achieved 37.1 mpg on the computer and went 650 miles while still having just under 1/4 of my tank left. Absolutely phenomenal. With the torque, the engine glided up the mountains entering San Diego county on the I-8. Diesel, to me, is the only way you should go.
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Old 01-19-2014, 08:11 AM   #9
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so if tdi can only get 36 mpg on highway the gas version is not too shabby for me either i can get 32-33 on garden state parkway 65mph.
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Old 01-19-2014, 08:29 AM   #10
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I would like to add, at 75mph, the computer showed 41.9 mpg. At 85 it dropped to 37.5 mpg.
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Old 01-19-2014, 08:40 AM   #11
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Default Both engines are good - which suits your driving style?

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Originally Posted by audiman98 View Post

I understand the break-even economics of the TDI, for me around 90K miles or 4 1/2 years. My decision between the two engines I want based on which is the most satisfying to drive long term.
Not an easy decision. The economics are not simple as the additional cost of the diesel engine ($2400) does not go to zero at the time you sell the car. Too early to tell, however, based on experience with other long life diesel engines (MB) and the known long life of diesel engines one might assume that you will get most of it back when you sell the car at ~100k miles.

This is my first diesel (A7) and i/we purchased it because of all the things already said: long time between fill-ups, very high torque engine and more suitable to our driving style of suburban and highway driving. As we don't drive our gas engine Audi above 4500 RPM why not buy an engine made to run up to 4600 RPM. These new diesel engines are quite amazing with their Porsche designed turbos, instant starts and piezo-electric injectors at extremely high pressure and sophisticated electronics (up to 10 fuel injections/cycle). No wonder they are so efficient.

Keep in mind that you can't go wrong with either engine. They are both extremely good and you are buying them for a fraction what others in Europe (or the rest of the world) are paying.
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Old 01-19-2014, 11:43 AM   #12
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Originally Posted by snagitseven View Post
And here we go again...yet another TDI vs. TFSI thread. Gentlemen, (re)start your engines.
Restart your engines indeed To the OP, you have pros and cons in both engines, I think is more like which one should you marry, a blonde or a brunette (redheads are only for mistresses that is an inside joke) Regardless the difference in performance feeling, engine revs and sound,the price difference, the consumption and the fuel price, add this one to the pot "has it happened to you arrived at the gas station running on fumes (for whatever the reason was) just to find out that last hope station doesn't carry diesel?,
I don't have a diesel but it has happened to me to reach that last station and to realize there was no diesel available, and I pictured the same scenario in a diesel car.
Pros and cons, others say once you go diesel you never go back, maybe, maybe not.
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Old 01-19-2014, 11:52 AM   #13
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Originally Posted by q5q7 View Post
so if tdi can only get 36 mpg on highway the gas version is not too shabby for me either i can get 32-33 on garden state parkway 65mph.
My best result was 47 mpg ( on highway, however tank was almost empty ) Yesterday I did round trip to Harrisburg and got 42 mpg with full tank of fuel..
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Old 01-19-2014, 03:10 PM   #14
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Originally Posted by AudioBear View Post
Sorry the quote was somebody that spends more than $60K isn't going to care much about fuel mileage.
Yea, that was me

And then there is what Ward's said about the TFSI

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Originally Posted by dicktahoe View Post
Ward's has named the 3.0T one of the ten-best engines in the world for the past 5 years--they did it again in 2013. An unheard of accomplishment.

http://wardsauto.com/auto-makers/war...ges-discussion
What I have come to learn from past TDI vs TFSI discussions here is the TDI folks are like the hybrid zealots. Diesel is a new religion to them and they like to preach it

Don't want that to come across the wrong way - it just seems they are much more vociferous about their love of diesel than anything else (whether it be in the A6 or other past vehicles)

To me - I like the performance gains and power the TFSI gives me - because that is what is important to me. If I was mainly focused on gas mileage instead of performance, and intended to keep my car a long time to make up the additional costs in fuel savings, then I would consider the TDI, but like I said before, if you are spending $60K on a vehicle, you probably do not have to worry much about gas mileage.

Plain and simple - you need to decide based on what is important to you
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Old 01-19-2014, 03:30 PM   #15
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Yea, that was me And then there is what Ward's said about the TFSI What I have come to learn from past TDI vs TFSI discussions here is the TDI folks are like the hybrid zealots. Diesel is a new religion to them and they like to preach it Don't want that to come across the wrong way - it just seems they are much more vociferous about their love of diesel than anything else (whether it be in the A6 or other past vehicles) To me - I like the performance gains and power the TFSI gives me - because that is what is important to me. If I was mainly focused on gas mileage instead of performance, and intended to keep my car a long time to make up the additional costs in fuel savings, then I would consider the TDI, but like I said before, if you are spending $60K on a vehicle, you probably do not have to worry much about gas mileage. Plain and simple - you need to decide based on what is important to you
Exactly what I think, TDI guys are like just converted vegetarians who cannot understand why we still eat/like meat
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Old 01-19-2014, 03:53 PM   #16
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but like I said before, if you are spending $60K on a vehicle, you probably do not have to worry much about gas mileage.
I'll say it again, thats Bull****. I bought this car BECAUSE of its fuel economy. If I didn't care I would have kept my $100k X5M and its 9-12mpg. Mileage does matter to everybody, regardless of how much they spend on a car.
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Old 01-19-2014, 04:20 PM   #17
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I'll say it again, thats Bull****. I bought this car BECAUSE of its fuel economy. If I didn't care I would have kept my $100k X5M and its 9-12mpg. Mileage does matter to everybody, regardless of how much they spend on a car.
You are one of the few that accept that, most of the posts in these threads are like they purchased the car because they like the feeling of the Diesel engine not for the fuel savings (I believe mavericks post was about those posts) using the same analogy I used before, some say they are vegetarians because it is healthier and some others because they like the taste.
You are one of the ones that have a diesel because is healthier, I just can't believe veggies taste better than meat
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Old 01-19-2014, 04:31 PM   #18
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You are one of the ones that have a diesel because is healthier, I just can't believe veggies taste better than meat
I don't have a diesel. I have a TFSI. Even the gas motor is a HUGE improvement to what I had.
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Old 01-19-2014, 04:32 PM   #19
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FWIW, I just sold my B8 S4 to get something a little more practical since I have an S6 which is a very similar type of car (4-door sport sedan). I decided on a Q5 and for about the same money, I could get a TDI or the SQ5. I drove both and in the end I decided on the TDI since it's more useful power-wise for daily driving. It's hard to beat abundant low-end torque for a DD and the improved fuel mileage to me is simply an added bonus.

My S4 was chipped, but the Q5 still had a more stout low-end and the TDI pulls away at low revs effortlessly much like my S6.

In the end if you ignore fuel mileage, it's a choice between the daily drivability of lots of torque versus a motor that will give you more smiles when you start driving aggressively and wind the motor up into the upper ranges. It seems everyone who opts for a TDI raves and rants about how great diesels are. So unless you like to often explore the upper end of the rev range, I bet the TDI will make you smile too.
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Old 01-19-2014, 05:11 PM   #20
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I don't have a diesel. I have a TFSI. Even the gas motor is a HUGE improvement to what I had.
Sorry, you are right, but still you got my point.
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