Audi A5 Vs Mercedes C-Class Convertible: Which To Buy?

Luxury convertibles blend exhilarating open-air freedom with premium refinement, and few do it better than the Audi A5 Cabriolet and Mercedes C-Class Cabriolet. These German rivals target drivers seeking style, comfort, and dynamic performance. This comprehensive comparison dives into their powertrains, ride quality, cabin experiences, practicality, and ownership costs to determine which drop-top delivers the superior all-around package.

Power and Performance Breakdown

Both models offer efficient diesel and potent petrol options, but their approaches differ. The Audi A5 Cabriolet frequently pairs a 2.0-liter turbocharged diesel engine producing around 187 horsepower and 400 Nm of torque with a smooth seven-speed dual-clutch automatic transmission and front-wheel drive in base setups. This setup propels the A5 from 0-60 mph in approximately 8.0 seconds, with a top speed near 144 mph.

In contrast, the Mercedes C-Class Cabriolet, exemplified by the C 220 d 4MATIC variant, uses a 2.1-liter diesel generating 168 horsepower but matching 400 Nm torque, mated to a nine-speed automatic and all-wheel drive. Despite lower peak power, its superior traction and gearing enable a slightly quicker 0-60 mph time of 7.9 seconds and a top speed of 140 mph. Real-world acceleration feels neck-and-neck, with the Mercedes edging ahead in higher gears during track tests.

Petrol variants shift the balance. Recent Mercedes C-Class models feature a 2.0-liter turbocharged unit with mild-hybrid assistance, delivering 255 horsepower for brisk performance without turbo lag. The Audi counters with similar 2.0-liter petrol options, emphasizing responsive handling. Fuel economy favors the Audi diesel at up to 42.8 mpg in tests, versus the Mercedes’ 37.3 mpg, though newer mild-hybrid tech in the C-Class improves highway efficiency to around 35 mpg combined.

Handling and Ride Dynamics

The Audi A5 shines in twisty roads thanks to its precise steering and balanced chassis. Standard sports suspension on higher trims like S line provides sharp cornering with minimal body roll, making it the driver’s choice for spirited drives. Its front-wheel-drive layout keeps weight distribution agile, though it can feel less planted in wet conditions compared to all-wheel-drive rivals.

The Mercedes C-Class prioritizes composure over outright sharpness. Its 4MATIC system enhances grip, particularly with the roof down, where wind noise is better managed. The ride is plusher, absorbing bumps more effectively for long cruises, but it trails the Audi in mid-corner agility. Adaptive dampers, available on AMG Line models, allow toggling between comfort and sport modes, broadening its appeal.

Braking performance is strong across both, with autonomous emergency systems standard. The A5’s lighter feel suits enthusiastic drivers, while the C-Class’s stability aids family outings.

Design and Open-Top Experience

Exterior styling pits the Audi’s sleek, muscular lines against the Mercedes’ elegant curves. The A5’s second-generation refresh introduced sharper headlights and a wider stance, evoking a sportier coupe-convertible vibe. The Mercedes counters with flowing proportions and a star-studded grille, exuding sophistication.

Roof operation is effortless in both—fully automatic fabric tops deploy in under 20 seconds up to 30 mph. However, the C-Class excels in wind management with powered deflectors and an optional Airscarf neck-heating system, reducing buffeting for four occupants. The Audi lacks this, though its ambient lighting and part-leather seats create a welcoming cockpit.

• Audi A5 strengths: Aggressive stance, LED matrix headlights standard.
• Mercedes C-Class strengths: Airscarf heating, smoother top-down refinement.

Interior Comfort and Technology

Cabins are tech-laden havens. The Audi’s dual-touchscreen MMI system, updated with haptic feedback, integrates sat-nav, DAB radio, and Bluetooth seamlessly. Virtual Cockpit digital gauges are intuitive, and 18-inch alloys pair with premium audio.

Mercedes’ dual 12.3-inch displays widescreen the dash, with voice-activated COMAND plus parking aids and heated seats as standard. Its interior feels more opulent, with superior materials and ambient lighting options. User ratings highlight the A5’s comfort edge (5.0/5) over the C-Class (4.5/5).

Boot space is practical: Audi offers hatchback-style access for easier loading, up to 44.9 cubic feet with seats folded, ideal for weekend getaways. The C-Class provides ample room but less versatility.

Pricing, Running Costs, and Value

Entry prices hover closely: Audi A5 around $47,595 MSRP, Mercedes C-Class at $51,000, though diesel models from 2017 started at £42,625 vs £43,905. In India, C-Class lists at Rs. 64.29 Lakh, A5 at Rs. 69.49 Lakh.

CO2 emissions are similar (122-134 g/km), with £140 annual tax. Insurance and maintenance favor the Audi slightly due to simpler front-drive setups. Resale holds strong for both premium badges.

Safety and Everyday Practicality

Both earn top safety marks with LED headlights, AEB, and lane-keeping aids. The Mercedes adds parking assistance and climate control for four-up top-down cruises. Rear space accommodates adults comfortably in the C-Class, slightly better than the A5.

Daily usability leans Mercedes for refinement, Audi for fun.

Pros and Cons at a Glance

• Audi A5 Cabriolet:
  • Pros: Sharper handling, better fuel economy, agile dynamics.
  • Cons: No neck-heating, less plush ride.
• Mercedes C-Class Cabriolet:
  • Pros: Superior open-top comfort, AWD grip, luxurious cabin.
  • Cons: Slightly thirstier, less engaging drive.

Which One Wins?

For keen drivers, the Audi A5 Cabriolet takes the crown with its precise handling and efficiency. Families or comfort seekers will prefer the Mercedes C-Class for its refinement and features. Test drive both to match your priorities.

Frequently Asked Questions

Which has better fuel economy?

The Audi A5 diesel achieves up to 42.8 mpg, outperforming the Mercedes’ 37.3 mpg in tests.

Is the Mercedes more comfortable with the roof down?

Yes, thanks to Airscarf and deflectors, ideal for four passengers.

How do prices compare?

Audi starts lower at $47,595 vs Mercedes $51,000 MSRP.

Which is faster?

Mercedes edges 0-60 mph by 0.1 seconds in diesel form.

Are they safe?

Both feature AEB, LEDs, and high crash ratings standard.