Mercedes-AMG SL 43: A Surprisingly Powerful Four-Cylinder Roadster
The Mercedes-AMG SL 43 is a roadster that defies expectations. With a 2.0-litre four-cylinder engine, it may not sound like a powerhouse, but Mercedes has a history of delivering impressive performance with smaller engines. Let’s take a closer look at this upmarket, sporting roadster and see if it lives up to its reputation.
A Legacy of Performance
To understand the SL 43’s unique engine choice, we need to look back at the 1954 Mercedes 190 SL. The 300 SL Gullwing and its roadster successor were expensive due to their bespoke chassis and cutting-edge fuel-injected engines. To make the roadster more accessible, Mercedes introduced the 190 SL, which featured a 1.9-litre four-cylinder engine. Despite its modest 105bhp, it became a hit. The SL 43 follows in the footsteps of its predecessor by offering a more affordable option without sacrificing performance.
Impressive Power and Design
At first glance, the SL 43 looks identical to its V8 counterparts. With its long bonnet, clean lines, and big wheels, it exudes elegance and sportiness. The M139 engine in the SL 43 is a development of the one found in the A45, delivering 375bhp. While it has slightly less peak power than the V8 versions, it benefits from a 48V mild-hybrid system. This system includes an integrated starter/generator that contributes an additional 13bhp and an electric motor in the turbocharger that improves throttle response.
A Keen Driver’s Choice
One advantage the SL 43 has over its V8 counterparts is its lack of front driveshafts. This, combined with a lighter front end and slightly smaller alloy wheels, makes it a compelling choice for driving enthusiasts. During a comparison test with the SL 55, the SL 43 proved to be the preferred option for many. The steering feels slightly slower and lighter, providing a more natural and engaging driving experience. The car feels lighter and more agile, diving into bends with enthusiasm. It even exhibits a bit of rotation when powering out of tight corners. While it may not match the Toyota GR86 in terms of handling, the SL 43 is still a thrilling and engaging roadster.
The Power of the V8
However, the V8 engine found in the SL 55 is truly sensational. With its thundering and torquey nature, it delivers an exhilarating driving experience. Whether you’re cruising through town or accelerating on a motorway on-ramp, the V8 engine never fails to impress. On the other hand, the four-cylinder engine in the SL 43 is a marvel of engineering, offering impressive power and responsiveness. However, it lacks the memorable roar of the V8 and the gearbox can feel clunky at low speeds. Additionally, fuel efficiency is not its strong suit, with a return of 28mpg when driven gently and 18mpg when pushed.
The Price of Performance
Priced at £108,165, the SL 43 is not a bargain option. While it offers a complete package without the need for additional options, there are other roadsters available at the same price point that come with V8 engines. Buyers in the UK seeking an indulgent roadster may be more inclined to choose a vehicle with a V8 or flat six engine.
In conclusion, the Mercedes-AMG SL 43 is a surprising roadster that defies expectations. Despite its four-cylinder engine, it delivers impressive power and performance. While it may not match the thunderous roar of its V8 counterparts, it offers an engaging driving experience and elegant design. However, with its higher price tag compared to other roadsters in its class, buyers may opt for a vehicle with a larger engine. Ultimately, the choice between the SL 43 and its V8 counterparts will come down to personal preference and priorities.