• 2018 Audi RS3 Sedan

400 horsepower in a cool compact

The Audi A3 Sedan was launched in 2013, just one year after the German brand introduced the third-generation A3. Offered for the first time alongside the hatchback and convertible models, the four-door shares almost everything with its siblings. It is identical styling-wise except for the deck lid, while the interior is basically the same save for a few changes in the rear compartment. Built on the same MQB platform shared with the Volkswagen Golf, the A3 Sedan also borrows its engine lineup form the A3 Sportback, including the 1.2- to 2.0-liter gasoline units and both the 1.6- and 2.0-liter diesels. Much like any other Audi model, the A3 also spawned


badged performance models.

In 2017, the A3 family grew to include yet another member, its most powerful compact sedan yet, the RS3. Caught testing under heavy camouflage as well as on the Nurburgring track since 2015, the beefed-up compact four-door made its global debut at the 2016 Paris Motor Show. As expected, the RS3 is a more menacing version of the S3, sharing styling cues with the larger RS4 and drawing juice from the award-winning, 2.5-liter five-cylinder engine from the RS versions of the Audi Q3 and TT.

The sedan crossed the pond to the U.S. in August 2017 for the 2018 model year as a competitor for the Mercedes-AMG CLA45.

Continue reading to learn more about the 2018 Audi RS3 Sedan.

  • 2018 Audi RS3 Sedan
  • Year:
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  • Model:
  • Model:
  • 0-60 time:
    4 sec. (Est.)
  • Top Speed:
    155 mph (Est.)
  • Price:
  • car segment:
  • body style:
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2018 Audi RS3 Sedan High Resolution Exterior
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2018 Audi RS3 Sedan High Resolution Exterior
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2018 Audi RS3 Sedan High Resolution Exterior
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Although this is the first-ever RS3 sedan, its design is more than familiar. Essentially an RS3 Sportback with a trunk, the RS3 sedan is almost identical to the hatchback model. The front end is highlighted by Audi’s new styling language with sharper lines and RS elements such as the "Singleframe" grille with honeycomb mesh and Quattro logo at the bottom and the black blade just above the splitter. The latter showed up on RS models a couple of years back and extends across the entire width of the fascia into the side air inlets. The new LED headlamps include the distinctive RS daytime running light signature, but Matrix LED units are also available.

The front end is highlighted by Audi's new styling language with sharper lines and RS elements.

Onto the sides, you’ll spot more features previously seen on RS-badged models. There’s flared from wheel arches, which made the sedan 20mm (0.8 inches) wider than the standard A3, beefier side skirts, blacked-out window trim, black side mirrors, machined rims, and larger brake calipers with "RS" logos. Around back, the sedan showcases a trunk lid spoiler and a big diffuser with vertical fins for enhanced aerodynamics, as well as a pair of oval tailpipes. The sporty look is enhanced by the "RS3" badge below the left taillight and the 14mm (0.55-inch) wider rear track.

On top of these extra features, the RS3 Sedan also gets the RS-exclusive Nardo Gray and Catalunya Red exterior colors.

All told, this is the most aggressive A3 Sedan ever produced and a four-door worthy of the RS badge. And even though it looks like a shrunken RS4 for the most part, it has a few unique features of its own.


2018 Audi RS3 Sedan High Resolution Interior
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2018 Audi RS3 Sedan High Resolution Interior
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2018 Audi RS3 Sedan High Resolution Interior
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Inside the RS3, you will find pretty much the same design layout as in the S3, but with the extra goodies that come with the "RS" badge. For instance, the front seats feature the heavier bolstering that comes with the "RS" badge, while the steering wheel has a sportier, flat-bottom design. Both are wrapped in black Nappa leather and come with "RS" logos, while the instrument panel and door panels feature RS-specific inlays. Customers looking to take the sedan at the track can select the optional, more contoured seats with integrated head restraints and diamond upholstery pattern.

The front seats feature the heavier bolstering that comes with the "RS" badge, while the steering wheel has a sportier, flat-bottom design.

The RS3 Sedan also benefits from Audi’s latest virtual cockpit, which includes a 12.3-inch TFT screen instead of the mechanical gauge cluster. When using in the standard setting, it displays the usual speedo/tach combo, while the infotainment mode allows the screen to display navigation, phone, and audio system information. The MMI also enables the driver to choose between three display modes. They include a special RS screen that moves the tachometer to the center, with tire pressure, torque and g‑forces on the left and right. When the transmission is operating in manual mode, a scale with a color background signals the driver to use the steering wheel paddle or selector lever to upshift when approaching maximum revs.

Moving over to the infotainment system, the main control element is the rotary/push-button control on the center console. It also includes a touchpad for scrolling, zooming and writing, and functions such as a text search feature that automatically completes the user’s input after entering just a few letters. The sedan is also equipped with an LTE module with Audi Connect, which includes navigation with Google Earth and Google Street View, as well as information on fuel prices, the weather, travel and traffic. Inductive charging for phones and a Bang & Olufsen sound system with 705 watts 14 speakers are also standard.


2018 Audi RS3 Sedan High Resolution Drivetrain
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As expected, the RS3 Sedan gets its juice from a version of the 2.5-liter five-cylinder engine that Audi initially developed for the current TT-RS. The turbocharged mill generates 400 horsepower and 354 pound-feet of torque, just like in the TT-RS. The compact sedan needs 3.9 seconds to sprint from 0 to 60 mph, which makes it as quick as the AMG CLA45, and tops out at 155 mph. On request, Audi will increase the electronically limited top speed to 174 mph, something you can’t get from Mercedes-Benz.

As expected, the RS3 Sedan gets its juice from a version of the 2.5-liter five-cylinder engine that Audi initially developed for the current TT-RS.

Featuring a light-alloy crankcase, the engine is also 57 pounds lighter than its predecessor. Thanks to its dual injection into the intake manifold and combustion chambers, as well as a valvelift system for variable control of the exhaust valves, the unit also delivers optimal power development at a reduced consumption level. At least that’s what Audi claims, as we’re still waiting for official fuel economy figures.

The five-cylinder mates to an S Tronic, seven-speed dual-clutch transmission that sends the power to all four corners through Audi’s already familial Quattro all-wheel-drive system. The torque is distributed variably between the axles, with a large share sent to the rear wheel under spirited driving.

The sedan also comes with wheel-selective torque control, progressive steering, four-link rear axle, and a suspension setup that 25mm (one-inch) lower than the standard model. Stopping power comes from 14.6-inch discs with eight-piston calipers at the front and 12.2-inch discs to the rear. Optionally, Audi supplies carbon-ceramic front disc brakes.


2018 Audi RS3 Sedan High Resolution Exterior
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In the safety department, the new RS3 gets a slew of new driver assistance features, including active lane assist, pre-sense front warning, pedestrian monitor, and rear-cross traffic warning. Traffic jam assist with the adaptive cruise control, Stop&Go, and emergency braking will also be offered as options.


2018 Audi RS3 Sedan High Resolution Exterior
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The Audi RS3 Sedan starts from $54,900, which is a whopping, $12,000 premium over the S3. This makes the RS3 the most expensive vehicle in its niche. Find out how much the competition costs below.


Mercedes-AMG CLA45

2017 Mercedes-AMG CLA45
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The only performance car in this small niche before 2018, the AMG CLA45 is finally getting the competitor it’s been waiting for since 2013. Styling-wise, the CLA45 has the advantage of receiving AMG-inspired styling, highlighted by an AMG "twin blade" radiator grille and cross strut in the AMG front apron. AMG also added larger side skirts and a menacing rear diffuser, giving the CLA45 a real identity that the RS3 Sedan should be very wary of. The AMG CLA45 lugs around an AMG-built, 2.0-liter turbo engine that produces 375 horsepower and 350 pound-feet of torque. This peppy four-pot combines with an AMG 4Matic all-wheel-drive system to help the CLA45 hit 60 mph in just 4.1 seconds, to go with a top speed of 155 mph. Pricing for the CLA45 starts from $50,400, which makes it significantly more affordable than the Audi.

Read our full review of the Mercedes-AMG CLA45.


2016 - 2018 BMW M2 High Resolution Exterior
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Until BMW launches a sedan based on the 1 Series in the United States and adds an M performance model to the lineup, the two-door M2 remains the company’s only competitor for the Audi RS3. Although it lacks a proper four-door layout and it’s probably a bit cramped in the rear compartment, the M2 has everything it needs to give the RS3 a run for its money. It looks downright aggressive, it has a well-equipped cabin with BMW’s latest technology, and a beefed-up, 3.0-liter six-cylinder engine good for 365 horsepower and 343 pound-feet of twist. Charging from 0 to 60 mph takes 4.2 seconds with the dual-clutch automatic and 4.4 seconds with the manual. Granted, it’s not as quick as the RS3, but at least you can have it with a stick and a clutch pedal. In 2018, BMW launched the M2 Competition, which delivers a more impressive 404 horsepower and 406 pound-feet of torque. Pricing starts from $54,500.

Read our full story on the BMW M2 Competition.

Mercedes-AMG A45 Sedan

Mercedes has yet to confirm that it will build an AMG A45 Sedan, but the standard four-door A-Class was already introduced in China and will come to the U.S. by the end of 2018. SO it’s safe to assume that an AMG variant will follow. Heavily based on the latest CLS design-wise, the A-Class sedan will showcase sportier fascias front and rear and an exclusive interior with premium upholstery, sports seats, and carbon-fiber trim. Power should come from a beefed-up 2.0-liter four-cylinder engine based on the one used in the previous AMG A45 hatchback. Output is rumored to sit around the 400-horsepower mark, which should push the sedan from 0 to 60 mph in around 4.1 seconds, to go with a top speed of up to 174 mph. Pricing should be similar to the competition, between $53,000 to $57,000 in the U.S.

Read our speculative article on the upcoming Mercedes-AMG A45 Sedan.

BMW 1M Sedan

An M version of the BMW 1 Series Sedan would be a better competitor for the RS3 Sedan than the M2, but the problem is that the four-door is a China-only vehicle as of 2018. However, word has it BMW might bring an M model to the U.S. sooner than later. The beefed-up sedan will get a range of M parts inside and out. The exterior will become significantly more aggressive, while the cabin will get a flat-bottom steering wheel, aluminum and carbon-fiber trim, and extra standard features. Power will probably come from the twin-turbo, 3.0-liter inline-six engine offered in a range of compact Bimmers, including the M2 and M3. The recently unveiled M2 Competition comes with 404 horsepower and 406 pound-feet on tap, which would be enough for BMW to give both the RS3 a run for its money. The 1M Sedan will cost more than $50,000 once it comes to the U.S.

Read our speculative review of the BMW 1M Sedan.


2018 Audi RS3 Sedan High Resolution Exterior
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Arguably one of the most anticipated RS products of the decade, the RS3 Sedan is finally making its way into Audi’s lineup. And, needless to say, the A3 family desperately needs a high-performance sedan to compete against the bonkers Mercedes-AMG CLA45. Given the drivetrain and the technology behind it, RS3 Sedan will definitely be an awesome compact with great potential on the race track. On the other hand, it remains to be seen if the RS3 has what it takes to compete with the upcoming Mercedes-AMG A45 Sedan.

  • Leave it
    • Tough competition from Mercedes-Benz
    • A bit more expensive than competitors

Update History

Updated 10/03/2016: We added all the official details on the new RS3 sedan, plus a series of images taken during the car’s official debut at the 2016 Paris Auto Show.

Updated 07/12/2016: Our spy photographers caught the upcoming RS3 sedan out for a testing session at the famous Nurburgring race track.

Spy Shots

July 12, 2016 - Audi RS3 sedan caught testing at Nurburgring

2018 Audi RS3 Sedan Exterior Spyshots
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2018 Audi RS3 Sedan Exterior Spyshots
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2018 Audi RS3 Sedan Exterior Spyshots
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2018 Audi RS3 Sedan Exterior Exclusive Renderings Computer Renderings and Photoshop
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Ciprian Florea
Ciprian Florea
Senior Editor and Supercar Expert - ciprian@topspeed.com
Ciprian's passion for everything with four wheels (and more) started back when he was just a little boy, and the Lamborghini Countach was still the coolest car poster you could hang on your wall. Ciprian's career as a journalist began long before earning a Bachelor's degree, but it was only after graduating that his love for cars became a profession.  Read full bio
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