Positive Review
As others have said, this car is unique, and maybe even irrelevant; but in a wonderful way. One car stood out in my quest to have a V8, AWD, 6sp, sedan. This was it. Literally. Styling: Taut, fluid and low-key. No boy racer look here. I'm 40, I don't want to look like I'm struggling with that. My car has a performance exhaust on it, and most of the time, people are looking around for the hooligan with the growly noises. This car doesn't stick out. The low profile helps, because it's a pretty fast car and you don't necessarily want to attract too much attention. Interior: Audi is known for great interiors. This one is no exception. It was a little before the super-lux interiors of the 2010s, but it is well constructed, has held up well and has a great number of creature comforts. The Recaro seats are very adjustable and comfortable. Grippy but not confining, I sometimes go for a drive when my back hurts, just because they're that good. The steering wheel is less than ideal and feels cheap in an otherwise well-heeled package. Replacements/upgrades are available for a price. Handling: This is a highway barnstormer with reasonably quick in-town handling. The front end is heavy with that big lump up there, but the steering is progressive and you always know what the car is doing. I like the way it handles. Some find it plodding and slow, I find it reassuring and rock-solid. Ride is firm but not jarring, even on Michigan's notorious roads. Performance: For its time, this car was very fast. Now, it's merely satisfyingly quick. Passing on the highway is effortless and addictive. Set the speed alarm or you will be in trouble with the law. Of course, mileage is rotten and premium is required. This is one of the costs of doing business with this car. Buyer beware. I have a big brake kit on my example. Stopping is effortless and fade-free. I cannot speak to the stock setup, however. Engine: This is the best sounding engine this side of an AMG or perhaps even a flat-plane Ferrari. Born to rev with 5V per cylinder heads and a reasonably high compression ratio, this engine pulls well at all RPMs, though drivers of Detroit iron may yearn for lower end torque. The engine was pretty high tech for its time and there are some engineering compromises to make it fit in the small engine bay. Notably, the timing gear is at the back (firewall side) of the engine. There are some well noted problems with durability of the timing components and cars that have not been well-maintained are generally considered taboo. It is an "engine out" procedure to do the timing, with some owners paying up to $10K for the service. This is now a sub $20K car, so that's a bitter pill. Also, high silicon aluminum block, (trade name Alusil), is prone to cylinder wall scoring. As a result, many of these cars are oil burners. Mine with just over 100K miles burns 5 quarts between changes. This is synthetic oil, and so isn't cheap. Another cost of ownership for this car. All that worry goes away when you're driving it, though. If you buy a car because you want the most rational and reliable transportation, this is not your car. If you believe that getting there is half, or more than half, the fun, this could be a great motor for you. Tip: Buy the newest, best maintained, lowest mileage unit you can find. Shop, they're out there. Spend a couple hundred on a good inspection of the engine. You won't regret it later as not doing so may cost you thousands!
Critical Review
I purchased a used 2005.5 S4 with all options (nav, cold weather, etc). I've been driving it for a year. First, I love driving this car! It is fast, sticks to the road like glue, and gives me an adrenaline rush just on my way to the grocery. Second, people compliment it all the time. However, after a year I'm considering trading it in for something with better mileage. I thought the 14/20 wouldn't bother me given that I drive very little. But even given that I only drive about 500 miles a month, that's 2 fill ups (approx 225 miles per tank in the city). Though this car has had few issues in the time I've owned it, I think the long-term cost of the gas and repairs make it a questionable value. If you are not budget-minded these issues may not bother you. Given that I purchased this car with 58K miles on it, I haven't been that impressed with the small issues such as the motor mounts cracked, center console lid broken, and rear floor lamp out (all of which I knew about when I purchased the car). I also had 2 costly repairs to the front right headlamp and a brake sensor had to be replaced. It does make me think, "why so many small things on a car with less than 60k miles?" I think this is a great car if you don't mind frequent fill ups and can deal with the higher maintenance costs. These cars cost about $50k new...for that price I would think Audi wouldn't have these small issues crop up in less than 6 years and 60K miles.
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I have owned several of these and I love them stick or auto. The performance feel is of a luxurious sport car.
It's a driver's car
It's a driver's car LOL only Con is for the rpassa
I've owned a lot of cars a lot of German cars couple of Corvettes Mustang GT but earlier ones and I got this like a month ago I bought a brand new mm CLK430 and paid 60k for it this Audi stands up to anything I owned maybe even better there is no value out there like this car...
Fun to drive, and a great symphony from its V8.
Could be a bit more fuel efficient.
I absolutely love this car! From the muted rumble of its 4.2L V8, to the thoughtful ratios of its six-speed manual transmission, to the sure-footedness of its Quattro AWD system, this car is a winner. When you add the restrained feel of the chassis, and the power convertible top with a hard tonneau, this car is in a class by itself.
Handling, practically, styling, reliability
Ergonomics
I bought the car used as a one owner car and I have never had a issue with it. As long as you keep up with maintenance the car will go forever. The performance is good for the age, but there is still something missing. Luckily there are many aftermarket upgrades that you can buy. The handling is really good as well. It is overall a great car that I would recommend to anyone considering one.
Six-speed manual combined with the V8 offers the enthusiast the very best of all worlds. Would say that it is highly collectible as it looks as though it was made in 2016-2018 with all of the bells and whistles!
Great performance if the car is maintained
Lengthy/costly preventive maintenance/repairs
Expect to replace a lot of parts at 10 years old.
Great sound, great drive. Drivers car.
Timing chain guides, headlights, stiff.
I drove this car for almost 8 years and I love the B6 body and engine. For everyday driving, this car rocks. Excellent acceleration and driving comfort, although at times a little stiff for US Interstates. I installed aftermarket downpipes and cutback exhaust, which made the car more responsive in the midrange rpm range. I tracked this car about twice a year and it is like most heavy four wheel drive Audis a notorious under steerer. Slow in the turns (4,000 lbs) and fast in the straights. The headlights are aquariums and almost always have condensate in the inside, which ended up causing almost $3,000 Dollars in damage to light system. I hear there is a different o-ring that fixes this problem. Then there are the timing chain guides that are almost certain to fail between 85K and 130K miles. Repair is almost $10K since whole engine has to be taken out for repair. I also burned through control arm bushings like nothing else. One pair lasted for only six months. RS bushings will again eliminate this problem. Otherwise a drivers car. Loved every minute I drove it. Highly recommend the car. Beware buying cars with high mileage! Make sure guides have been replaced! Enjoy.
Fun to drive, great sound system
poor mileage
This 2006 Audi S4 convertible has given me so much pleasure. I have usually bought a new car every two years but this car has been so great I am afraid to buy a new car. Other than oil changes and brakes and tires I have spent almost nothing on maintenance. The body looks great. Just this morning three men pulled up beside me and were asking questions about the car. I am often stopped in parking lots, etc and get compliments. Only problem is poor mileage but I expected this from the day I bought it, mostly because I drive it very hard.