2025 Audi A5/S5 Sportback: First Drive Review

ASPEN, Colo.—As SUVs continue their meteoric rise in the American market, Audi proves there’s still vitality in the sedan segment—albeit in Sportback form. The 2025 Audi A5 Sportback and its performance sibling, the S5 Sportback, swap traditional four-door packaging for a sleek five-door liftback profile, combining practicality, performance, and the latest in software-defined-vehicle electronics.

Premium Platform Combustion (PPC): A New Foundation

Both models ride on Audi’s all-new Premium Platform Combustion (PPC), shared across the VW Group’s premium brands. This aluminum-intensive architecture features a high-strength steel front subframe, multi-material sandwich floor for improved torsional rigidity, and a 48-volt electrical subsystem to power active chassis components and mild-hybrid assist. Key takeaways:

• Unibody torsional stiffness increased by 25% over previous A5
• Aluminum front longitudinal arms and cast-steel rear multi-link for precise handling
• Integrated energy absorption structures for enhanced crash safety

Under the Hood: Engine, Transmission, and Drivetrain

A5 Sportback 2.0 TFSI

The entry-level A5 Sportback features a turbocharged 2.0 L inline-4 with direct injection, a 10.5:1 compression ratio, and a variable geometry turbocharger (VGT) replacing the old twin-scroll design. Peak outputs are 268 hp (200 kW) at 5,500 rpm and 295 lb-ft (400 Nm) from 2,000–4,500 rpm. Paired with a 7-speed dual-clutch S tronic gearbox, power is sent to all four wheels via the latest quattro system with an electronically controlled multi-plate clutch.

• 0–60 mph in 5.4 seconds
• Combined fuel economy: 27 mpg (EPA)
• CO₂ emissions: 163 g/km (WLTP)
• 48 V mild-hybrid system allows engine-off coasting and seamless restarts

S5 Sportback 3.0 TFSI V6

The S5 swaps in a turbocharged 3.0 L V6 with Audi’s hot-V layout—exhaust manifolds and twin-scroll turbo sit within the cylinder V for rapid spool. Outputs rise to 362 hp (270 kW) and 406 lb-ft (550 Nm). The seven-speed S tronic is reinforced for higher torque loads, and the quattro system adds a crown-gear center diff for sportier torque distribution.

• 0–60 mph in 4.4 seconds
• Top speed electronically limited to 155 mph
• Optional adaptive air suspension with Dynamic Ride Control (DRC)
• Active exhaust valves tuned for a refined yet engaging soundtrack

Chassis, Steering, and Braking Innovations

Both Sportbacks benefit from a rack-mounted electric power steering (eEPS) directly bolted to the unibody, significantly reducing play. Audi engineers also revised front camber angles (+0.4°), stiffened the antiroll bars, and introduced brake-based torque vectoring (slowing the inside rear wheel under cornering) to tighten turn-in.

• Multi-link rear suspension with separate spring and damper layout
• 19″ to 20″ alloy wheels: disc-style for A5, Y-spoke design for S5
• Carbon-ceramic brake option on S5 with 6-piston front calipers

Software-Defined Vehicle: E³ 1.2 Electronic Architecture

New Sportbacks adopt Audi’s E³ 1.2 electrical platform—shifting from 100+ ECUs to five centralized domain controllers linked via a 1 Gbps Automotive Ethernet backbone. Key domains:

1. Infotainment: MIB 4 system with dual 10.1″ and 8.6″ OLED touchscreens, Snapdragon 820Am processor, and 5G connectivity
2. Driver Assistance: Sensor fusion ECU handling adaptive cruise, lane keep assist, and level-2 automation features
3. Ride & Handling: Real-time control of adaptive dampers, air springs, eEPS, and torque vectoring
4. Convenience/Body Electronics: Lighting, seat controls, and ambient features
5. Master Controller: Orchestrates diagnostics, cybersecurity (OTA-secure update manager), and over-the-air software upgrades

On the Road: Impressions and Expert Opinions

“The A5’s steering feels reassuringly precise in Dynamic mode, though Comfort can be too light for spirited driving. Suspension balance has improved, but feedback is still filtered.”
— Dr. Petra Müller, Audi Vehicle Dynamics Engineer

In Colorado’s mountain switchbacks, the A5 Sportback exhibits neutral handling and refined ride quality. Wind noise remains noticeable at highway speeds despite laminated acoustic glass. Adaptive cruise and predictive efficiency assist smooth long-distance travel.

The S5 Sportback delivers sharper response thanks to its lowered ride height (20 mm) and air springs. The stronger V6 and rapid-shift DCT make it deceptively quick; you’ll often find yourself above the speed limit without the typical supercar drama. Brake feel is linear, and torque vectoring lends corner exit push—ideal for drivers seeking engagement.

Deep Dive: Software Architecture and Future-Proofing

Transitioning to a zonal ECU layout reduces wiring weight by 15 kg and enables future over-the-air feature activation—from enhanced parking assist to new digital gauges. Audi’s cybersecurity framework aligns with ISO/SAE 21434 standards, ensuring encrypted key exchange and intrusion detection for safe OTA delivery.

Deep Dive: Market Positioning and Competitor Analysis

Against the BMW 3 Series Touring and Mercedes C-Class Estate, the A5 Sportback offers a more coupe-like silhouette and superior cargo opening—a 40:20:40 rear bench yields up to 1,038 L of space. While rival wagons edge cabin width by a few centimeters, Audi’s quattro traction advantage in snow and rain remains compelling for northern buyers.

Deep Dive: Ownership Costs and Sustainability

Federal tax credits do not apply, but the 48 V MHEV helps meet upcoming Euro 7 and future U.S. CAFE requirements. Maintenance intervals extend to 15,000 miles for oil service, aided by synthetic lubricant and a water-cooled charge air cooler that enhances turbo durability. Predicted 5-year cost of ownership aligns with class averages, supported by Audi’s Care Plan options.

Pricing and Trims

• A5 Sportback Premium: from $49,700
  Premium Plus pack ($3,600) adds Heads-Up Display, top-down cameras, adaptive cruise, and wireless Apple CarPlay/Android Auto.
• A5 Sportback Prestige: +$6,450 includes acoustic windshield, passenger display, OLED taillights (static), and Bang & Olufsen 3D sound.
• S5 Sportback Premium Plus: from $66,500
  Includes sports exhaust, heated sports seats, and extended safety suite.
• S5 Sportback Prestige: +$7,550 adds air suspension with Dynamic Ride Control, Nappa leather, rear sunshades, and RS-style steering wheel.

Conclusion

Audi’s shift to five-door Sportback body styles reinvigorates its compact lineup. The 2025 A5 and S5 Sportbacks balance daily usability with elevated driving dynamics and cutting-edge software-defined systems. While purists may lament the loss of a classic sedan silhouette, the Sportback delivers a compelling blend of performance, technology, and practicality for today’s discerning driver.