Undefined Mercedes SL500: V8 Grand Touring Review

The Mercedes SL500 stands as a benchmark in the luxury roadster segment, blending raw V8 power with sophisticated engineering and timeless elegance. This sixth-generation model introduces significant advancements, including a 125kg weight reduction that enhances both performance and efficiency without sacrificing comfort. Powered by a twin-turbocharged 4.7-litre V8 delivering 429bhp, it accelerates from 0-62mph in 4.6 seconds while achieving an impressive 31mpg combined. Ideal for long-distance cruising or spirited drives, the SL500 prioritizes grand touring prowess over pure sports car agility.

Engineering Marvels Under the Hood

At the heart of the SL500 lies its innovative twin-turbo 4.7-litre V8 engine, producing 429bhp at 5,250rpm and 516lb ft of torque from just 1,800rpm. This represents a 49bhp increase over the previous SL500, yet fuel economy improves by 22% to 31mpg, thanks to the lighter aluminium-intensive chassis and optimized 7-speed 7G-Tronic Plus automatic transmission. The stop/start system operates seamlessly, contributing to lower CO2 emissions of 212g/km.

Compared to the entry-level SL350’s 3.0-litre V6 (302bhp, 41.5mpg), the SL500 offers superior thrust for those seeking V8 drama. Its electronically limited top speed is 155mph, making it a refined highway devourer. The gearbox shines in Sport mode or with paddle shifters, delivering crisp shifts and a throaty exhaust note that evokes classic Mercedes heritage.

Chassis and Handling: Lighter and More Precise

Mercedes engineers shed 125kg through extensive use of aluminium, resulting in a stiffer bodyshell that eliminates scuttle shake on imperfect roads. Standard semi-active suspension with adjustable damping provides a compliant ride, but the optional Active Body Control (ABC) system elevates it further. ABC actively counters body roll, delivering flat cornering and plush cruising, even on Spain’s roughest tarmac.

While not a track weapon due to its 1,800kg-plus kerb weight, the SL500 handles with confidence. Steering is direct and communicative, building precision at higher speeds. Braking is strong and progressive, though some testers note pedal sensitivity under repeated hard use. Roadholding reaches 0.88g on a skidpad, competitive for a GT roadster.

Performance Specifications at a Glance

This table highlights the SL500’s balance of power and efficiency.

Retractable Hardtop: Versatility Redefined

The SL500’s power-folding metal roof deploys in 17 seconds at speeds up to 31mph, offering coupe-like refinement or open-air freedom. Wind buffeting is minimal, even at highway speeds, thanks to integral wind deflector and aerodynamic design. The cabin remains quiet at idle (46dBA) and cruising (70dBA), rising to 78dBA under full throttle.

Interior Refinement and Technology

Step inside to a haven of luxury: supple leather, wood veneers, and brushed aluminium create a warm, spacious ambiance superior to predecessors. Seats are supportive with multi-way adjustments and heating, while the COMAND infotainment system—though dated by modern standards—includes navigation, premium audio, and Bluetooth. Climate control is automatic and effective, blending retro charm with cutting-edge features like keyless entry and adaptive bi-xenon headlights.

• Key Interior Highlights: Heated power seats, 11-speaker Harman Kardon audio, dual-zone climate, ambient lighting.
• Practicality: 370-litre boot with roof up, folding rear seats for extra cargo.
• Safety: Nine airbags, stability control, optional ABC for enhanced dynamics.

Driving Impressions: GT Excellence

On twisty roads, the SL500 feels planted and eager, with the V8 providing effortless surge. ABC suspension absorbs bumps while maintaining composure, outshining rivals in ride quality. It’s no lightweight sports car but excels as a long-haul companion, prioritizing comfort over outright agility. Fuel efficiency surprises in mixed driving, often exceeding official figures.

Rivals and Market Position

The SL500 competes with the Porsche 911 Cabriolet, BMW Z4 M40i, and Jaguar F-Type. It outclasses them in luxury and refinement but trails in raw sportiness.

Priced from around £82,815, it offers premium value.

Ownership Considerations

Reliability is strong for Mercedes V8s, though maintenance costs are high. Depreciation is moderate for well-kept examples. Look for service history and ABC condition in used buys.

Frequently Asked Questions (FAQs)

Is the Mercedes SL500 a true sports car?

No, it’s a grand tourer focused on comfort and long-distance travel rather than track performance.

How fuel-efficient is the SL500?

Official figures claim 31mpg combined, aided by weight savings and efficient turbocharging.

What’s the difference between SL500 and SL63 AMG?

The SL63 adds more power (up to 518bhp) and aggressive tuning for superior speed.

Does the hardtop affect performance?

Negligibly; the chassis rigidity remains excellent with roof up or down.

Is ABC suspension worth it?

Yes, for ultimate ride and handling balance.

Why Choose the SL500 Today?

In a market of hybrids and EVs, the SL500 endures as a V8 icon, merging heritage with modern efficiency. Its lighter, stiffer platform and potent engine make it a compelling used buy for enthusiasts seeking uncompromised luxury.