Over the standard C63 AMG, the Edition 507 receives an extra 49bhp and 8lb ft of torque, taking its totals to 507 hp and 450lb ft. The electronic speed limiter has also been upped from 155 mph to 174mph, setting the Edition 507 apart from other AMG models and putting it just below the C63 Black Series.
The 0-62mph sprint is now dealt with in 4.2sec, or 4.3sec for the estate. Stopping power is provided by a ‘high-performance composite brake system’, clamped by red calipers and visible through new 19-inch cross spoke alloys.
The 2015 BMW M4 is powered by a twin-turbo 3.0-liter inline-six which makes 425 hp and 406 lb-ft. That’s barely up from the last-gen M3′s peak 414 hp, but up significantly in the torque department.
Clearly the two performance cars are not a one-to-one match, so how do they compare to each other?
Let’s see some excerpts from their review:
Despite its immense torque and eagerness at low revs, the AMG engine urges you to chase its top-end, where the sound is pure and unadulterated.
The way BMW M engineers have allowed a turbocharged six-cylinder to deliver crisp throttle response when the revs are hanging high is commendable, however compared with the C63 the M4 feels doughy at low revs. It’s not the torque delivery that’s the problem, because it soon comes on strong, but there’s not nearly the same immediate reaction from the engine when the throttle is quickly prodded.
The M4 engine is quieter at low revs, too. It segues into becoming louder than the Mercedes-Benz at higher revs, yet it’s not exactly for the better either. Unlike the sweet, creamy, classically six-cylinder sound produced from an M235i turbo 3.0-litre, for example, the M4 sounds more hard-edged and meaty, but also grainy and a bit coarse.
Where the M4 feels like a faster, larger version of the M235i, the C63 AMG Edition 507 is like a cut-price mini-supercar.
Every tester walked away from it enamoured by just how special it makes you feel, from its bombastic engine to every control that talks to you, wherever you’re driving it and at whatever speed. It’s exactly enough to make you forgive its old cabin and hard ride.
Where the BMW M4 is admired, the Mercedes-Benz C63 AMG Edition 507 is adored. As far as grand finales go, this one is both epic and dangerous – the precedent for the next turbo-V8 C63 has just been set for itself…