If you're shopping for an Audi and trying to figure out what makes an S or RS model different from a standard A model, you're not alone. Audi's performance badges represent more than cosmetic upgrades. They define levels of power, engineering, and driving dynamics that help you choose what fits your lifestyle.

Whether you're comparing an A4 to an S4 or looking at the differences between an SQ5 and RS Q8, this guide breaks down what each level brings to the table.

A Models: The Starting Point for Audi Luxury

Audi's A lineup, which includes models like the A3, A4, A6, Q5, and Q7, focuses on comfort, technology, and everyday drivability. These vehicles are refined and well-equipped, offering strong value for drivers who want a luxury experience without the performance extras.

Engines are typically turbocharged four-cylinders. Steering and suspension are tuned for comfort, and the exterior design remains elegant and understated. These are great for city commuters and families who want quiet, capable vehicles with a premium interior and the latest digital tech.

S Models: A More Engaging Drive

S models offer a noticeable jump in performance and handling without sacrificing comfort or convenience. These vehicles are built for drivers who want stronger acceleration, tighter cornering, and more personality on the road.

Take the Audi S4, for example. While the A4 comes with a turbocharged four-cylinder producing around 201 horsepower, the S4 upgrades to a 3.0L turbocharged V6 that delivers 349 horsepower. The SQ5 offers the same V6 powerplant with more aggressive handling and design cues than the Q5.

S models also include:

• Quattro all-wheel drive with sport calibration
• Lower, stiffer suspension
• Larger brakes
• Sport seats and aluminum or carbon trim
• Subtle changes to bumpers, exhaust tips, and badging

These cars feel sharper in corners and faster in a straight line but are still comfortable enough for daily use.

RS Models: Peak Performance from Audi Sport

RS stands for RennSport, which translates to “racing sport.” Audi Sport GmbH develops these models and are the most powerful, high-performance vehicles in the lineup. Every RS vehicle is tuned for serious performance, featuring high-output engines, advanced suspension systems, and bold styling that separates them from the rest.

For example:

• The RS 5 Sportback has a twin-turbo V6 producing 444 horsepower.
• The RS Q8 shares a 591-horsepower twin-turbo V8 with the Lamborghini Urus and accelerates from 0 to 60 mph in about 3.7 seconds.

RS models come with:

• RS-specific Quattro systems and drive modes
• Dynamic ride control and available ceramic brakes
• Wider fenders, large air intakes, and oval exhausts
• RS digital displays and performance gauges
• Premium materials like Alcantara and optional carbon fiber

These cars are not just fast; they’re engineered for control, feedback, and exclusivity.

Key Differences: A vs. S vs. RS

What About SUVs?

Audi applies the same performance approach to its SUV lineup. Here’s how they compare:

• Q5 → SQ5: Adds V6 power, upgraded suspension, and sporty touches
• Q7 → SQ7: Gains a twin-turbo V8 with 500+ hp and dynamic steering
• Q8 → RS Q8: The top performer with 591 hp, track-ready suspension, and RS interior upgrades

These models are perfect for drivers who want family-friendly space with serious capability under the hood.

Which Model Is Right for You?

Here’s a quick way to decide:

• Choose an A model if you want a premium car that’s quiet, efficient, and comfortable.
• Choose an S model if you want more power and sharper handling while keeping everyday comfort.
• Choose an RS model if you want the best performance Audi offers with bold design and advanced engineering.

Pricing and Value: What to Expect in 2025

As of July 2025, here are U.S. starting prices for popular models:

• Audi A4 Premium: ~$49,700
• Audi S4 Premium Plus: ~$54,900
• Audi RS 5 Sportback: ~$79,900
• Audi Q5: ~$55,500
• Audi SQ5: ~$64,800
• Audi RS Q8: ~$138,000

Exact pricing depends on options and packages, but this gives a good reference point for planning your next move.

For up-to-date specs and configurations, explore the official Audi USA model overview.

Ready to Feel the Difference?

Whether you're deciding between an A4 and an S4 or thinking about stepping up to an RS model, seeing and driving each one makes a huge difference. Audi’s performance tiers are more than just letters; they shape how the car feels, sounds, and responds to every input.

If you’re considering an upgrade or exploring your first Audi, visit Audi Great Neck to learn more or book a test drive. Our team can walk you through each model and help you experience what makes S and RS models so special.