Audi S4 Cabriolet: 4.2L V8 Review, Performance & Ownership

The Audi S4 Cabriolet stands out as a benchmark in the luxury performance convertible segment, combining a potent V8 engine, advanced all-wheel-drive system, and sophisticated open-top design. This model, particularly from the mid-2000s B7 generation, delivers thrilling acceleration, composed handling, and everyday usability, making it ideal for enthusiasts who crave both excitement and refinement.

Powertrain and Performance Excellence

At the heart of the S4 Cabriolet lies a **4.2-liter V8 engine** producing 340 horsepower and 302 lb-ft of torque. This naturally aspirated powerplant offers a broad powerband, providing strong low-end pull and a surge of power at higher revs, though some testers note a slight dip in mid-range responsiveness. Paired with either a six-speed manual or automatic transmission, it propels the car from 0-60 mph in approximately 5.8 seconds, with quarter-mile times around 14.3 seconds at 98 mph.

The standard **Quattro all-wheel-drive system** enhances traction, eliminating wheelspin during aggressive launches and ensuring confidence in wet or snowy conditions. This setup transfers power smoothly to all four wheels, contributing to the car’s reputation for secure, drama-free performance. Top speed is electronically limited to around 155 mph, though some examples have exceeded this in testing.

The added weight of the convertible body—primarily from reinforcements for chassis rigidity—results in slightly softer acceleration compared to the sedan, but it remains impressively quick for a four-seat drop-top. Fuel economy reflects the V8’s thirst, with EPA ratings of 14 mpg city and 19 mpg highway, translating to real-world figures around 16 mpg in mixed driving.

Dynamic Handling and Ride Quality

Engineers tuned the S4 Cabriolet for agile cornering, leveraging a sport-tuned suspension and wide tires on 18-inch wheels. It achieves lateral grip of 0.86 g on the skidpad, outperforming the sedan slightly due to optimized tire compound and AWD balance. The chassis feels planted and secure, inspiring confidence on winding roads without excessive body roll.

While not as razor-sharp as rear-drive rivals like BMW, the Audi’s all-weather capability and supple ride make it more versatile. Over rough surfaces, the firm setup transmits some road harshness, occasionally inducing chassis vibrations, but it avoids jarring impacts thanks to compliant bushings and thin sidewall tires. Quattro’s torque vectoring subtly adjusts power distribution for neutral handling, allowing precise control during spirited drives.

• Strengths: Exceptional grip in all conditions, composed cornering, stable high-speed cruising.
• Trade-offs: Firmer ride over potholes, minor weight penalty affecting ultimate agility.

Convertible Mechanics and Usability

The **power-operated soft top** deploys or retracts in about 20 seconds, even at speeds up to 31 mph, with an acoustic lining that minimizes wind noise at highway speeds. When folded, it reduces trunk space from 10 to 8 cubic feet, but a clever pass-through accommodates golf clubs or weekend bags without soiling the cabin.

Chassis reinforcements maintain structural integrity comparable to the coupe, preventing the cowl shake common in lesser convertibles. This results in a quiet, rigid platform that feels more like a fixed-roof car with the top down. Rear seats suit children or small adults, prioritizing front-row comfort with supportive, heated leather seats (standard on Cabriolet).

Interior Refinement and Technology

Audi’s hallmark build quality shines inside the S4 Cabriolet, featuring premium materials, precise assembly, and an intuitive layout. The cabin boasts soft-touch surfaces, aluminum or wood trim, and optional Recaro-style sport seats (sedan-specific; Cabriolet uses conventional leather). Standard features include Bluetooth, satellite radio, and heated front seats, with options like Bose audio, navigation, iPod interface, and parking sensors.

Ergonomics are driver-focused, with a flat torque curve from the V8 emitting a refined burble under acceleration. Visibility remains good despite the folding top, and the multi-function steering wheel controls most functions efficiently. While rear space is tight, the overall environment exudes luxury suitable for long cruises or top-down blasts.

Design and Exterior Appeal

Styling blends aggressive sportiness with Audi’s elegant lines: quad exhaust tips, subtle S badging, aggressive front fascia, and optional DTM package (sedan-only) with carbon-fiber accents and unique wheels. The Cabriolet measures about 182 inches long, with a sleek profile that turns heads whether roof-up or down. LED taillights and 18-inch alloys complete the premium athletic look.

Ownership Considerations: Costs and Reliability

Purchase prices for used B7 S4 Cabriolets hover around $20,000-$40,000 depending on mileage and condition, reflecting premium positioning. Maintenance demands attention to the V8’s timing chain, Quattro system, and convertible top hydraulics. Fuel and insurance costs are high due to performance credentials, but build quality promises longevity with proper care.

Common praises include addictive speed, phenomenal cornering, and a solid feel; drawbacks center on cramped rears and thirsty engine. It’s best for budget-flexible buyers prioritizing fun over frugality.

Comparisons with Rivals

Against the BMW M3 Convertible, the S4 offers superior all-weather traction but less razor-edge handling. Infiniti G37 and Mercedes C55 lack AWD standard, giving Audi an edge in versatility. The S4 Cabriolet excels as a grand tourer with sports car pace.

Why Choose the Audi S4 Cabriolet?

This model appeals to drivers seeking a do-it-all convertible: potent V8 symphony, AWD security, luxury trappings, and open-air freedom. It’s not the track weapon but shines on backroads, highways, and sunny days, proving convertibles needn’t sacrifice performance.

Frequently Asked Questions (FAQs)

Is the Audi S4 Cabriolet reliable?

With diligent maintenance, yes—its build is excellent, though V8 components like timing chains require periodic checks.

How fuel-efficient is it?

Expect 14-19 mpg EPA; real-world mixed driving yields about 16 mpg.

Can adults fit in the back seats?

Best for children or short trips; front seats prioritize two-up comfort.

What’s the top speed?

Electronically limited to 155 mph, with some tests reaching higher.

Is Quattro worth it for a convertible?

Absolutely—provides unmatched traction and stability year-round.