New & Used Audi A4: In Depth
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The Audi A4 is a mid-size luxury sedan that's the brand’s bestseller. It competes with the BMW 3-Serires, Mercedes-Benz C-Class, Cadillac ATS, and the Infiniti Q50.
The A4 family consists of the A4 sedan and its hotter S4 edition; the Allroad wagon is a version of the same running gear, and the A5 and S5 coupes and convertibles are related as well, though they have distinctive two-door body styles. Since 1996, when it first arrived as the replacement for the old 80/90 lineup, the A4 has been seen as a more dynamic alternative to more traditional luxury cars.
Size was an issue, not just with the Audi but with its German rivals. Many shoppers forgot how small the A4 was until they got inside—or tried the back seat. At just 175 inches long, the 1996 A4 wasn't much longer (or any larger inside) than a Toyota Corolla. It had a winning interior with a rich feel; Audi was way ahead of most other luxury automakers, including Mercedes-Benz and BMW, at that time when it came to interior appointments. That included the introduction of items like a nav system before most other compact luxury sedans were offering one.
Avant (wagon) models of the A4 were offered from 1998 until 2012, and mirrored the sedan offerings, though they offered a bit more versatility thanks to flat-folding back seats and the wide-opening hatch.
For 2000 and 2001, the limited-edition S4 offered a 250-horsepower, twin-turbo V-6 and quattro.
Audi extended its lead with the A4's redesign for 2002. It brought with it a completely new, more athletic look on the outside. With this generation, the A4 got a 170-horsepower version of the 1.8-liter four-cylinder engine or a 220-horsepower, 3.0-liter V-6. Audi offered a CVT (continuously variable) automatic for several years, but it was only offered on front-wheel-drive versions of the A4 (quattro models had the manual or a five-speed automatic). Overall, performance with the CVT was fine, just not especially satisfying from a performance standpoint.
Beginning with 2003, a Cabriolet (convertible) version of the A4 was introduced. The convertible was one of the safer soft-top choices as it included a pop-up roll car and side airbags. The convertible remained offered for 2009 with front-wheel drive and the CVT or with all-wheel drive and the automatic transmission, but it was replaced by the A5 Cabriolet for 2010.
Beginning with 2004, the S4 returned—this time with a 340-horsepower, 4.2-liter V-8 engine.
The Audi A4 was completely redesigned for 2009, on an all-new platform. All post-2009 Audi A4 models get Audi's latest version of the quattro all-wheel drive system, which biases more power to the back wheels and should appeal to those who want more of a performance feel without alienating those who simply want all-weather security. The S4 returned a year later: it was fitted with a supercharged 3.0-liter V-6 with 333 horsepower, teamed with a dual-clutch transmission, and an available Drive Select system that allows drivers to tailor transmission, steering, throttle, and suspension settings through Normal, Comfort, and Sport modes.
In the years since it was new on the U.S. market, the Audi A4 has grown about ten inches in length and has a wider, more spacious interior. Back-seat space remains a bit tight for taller adults. Front seats are another story altogether. The Audi A4 has offered very comfortable, supportive ones for years, and it remains one of the best smaller sporty sedans for tall drivers.
The A4 has remained one of the safer choices for those who are safety concerned, especially the most recent models, which have earned top five-star federal results and have been IIHS Top Safety Picks. Rear-seat side bags have been optional for many model years.
Today the sole powertrain for the A4 is a 211-horsepower version of the 2.0-liter turbocharged four-cylinder engine, paired to either a six-speed manual or a Tiptronic automatic transmission (or in base front-wheel-drive models, a CVT). The Tiptronic was upgraded to eight speeds for 2011, while the A4 carried over mostly unchanged to 2012.
A facelift was applied for the 2013 model year, when Audi also fitted its latest infotainment and telematics services, including Audi Connect, which turns the car into a mobile hotspot. Also on offer: an optional navigation system that incorporates Google Earth and Google Street View data, displayed on a gorgeous LCD screen, for one of the best GPS experiences available today.
Instead of reviving the wagon in the 2013 model year with other revamped models, Audi instead chose to import the Allroad, a wagon with higher ground clearance and standard all-wheel drive.
According to the latest reports, a new Audi A4 is expected to arrive sometime after 2014. It's expected to remain about the same size as today's car, but will lose weight thanks to better construction and to a lighter, electric-driven all-wheel-drive system. A wagon version would likely follow a year later.
Audi has confirmed that it will offer a turbodiesel engine in the A4--but not until the new A4 arrives in the U.S., sometime after the 2014 model year.