Group tests

Maserati Quattroporte v BMW M5 v Mercedes CLS 55: The Outsider

Is the elegant Maserati Quattroporte Sport GT a match for the muscle-bound BMW M5 and Mercedes-Benz CLS 55 AMG?

Comparison

 BMW M5Maserati Quattroporte Sport GTMercedes-Benz CLS 55 AMG
Engine90-degree V1090-degree V890-degree V8, supercharged
LocationFront, longitudinalFront-mid, longitudinalFront, longitudinal
Displacement4999cc4244cc5439cc
Cylinder BlockAluminium alloyAluminium alloyAluminium alloy
Cylinder HeadAluminium alloy, dohc per bank, 4v per cyl, bi-VANOS variable camshaft controlAluminium alloy, dohc per bank, 4v per cyl, variable valve timingAluminium alloy, sohc per bank, 3v per cyl
Fuel and IgnitionMS S65 engine management, multi-point fuel injectionBosch Motronic ME7 electronic ignition/injectionElectronic ignition and multi-point fuel injection
Max Power501bhp @ 7750rpm394bhp @ 7000rpm476bhp @ 6100rpm
Max Torque383lb ft @ 6100rpm333lb ft @ 4500rpm516lb ft @ 2650rpm
TransmissionSeven-speed SMG III paddle-shift manual, rear-wheel drive, M differential, DSCDuoSelect six-speed auto-actuated manual, rear-drive, stability controlFive-speed automatic, rear-wheel drive, ASR
Front SuspensionMacPherson struts, coil springs, electronically controlled dampers, arbDouble wishbones, 'Skyhook' continuously adaptable dampingFour-link, AIRMATIC DC air suspension, anti-roll bar
Rear SuspensionMulti-link, coil springs, electronically controlled dampers, arbDouble wishbones, 'Skyhook' continuously adaptable dampingMulti-link, AIRMATIC DC air suspension, anti-roll bar
BrakesCross-drilled and vented discs, 374mm front, 370mm rear, ABS, CBCVented discs, 330mmfront, 316mm rear, ABS, EBDCross-drilled and vented discs, 360mm fr, 330mmrr, ABS, ESP
Weight Kerb1830kg1930kg1920kg
Power to Weight278bhp/ton207bhp/ton252bhp/ton
Max Speed155mph (limited)171mph (claimed)155mph (limited)
Lap Time94.85secs94.85secs95.50secs
Basic Price£61,775£80,550£70,890
On SaleNowNowNow
Rating545
0 to 60 MPH4.7sec (claimed)5.2sec (claimed)4.7sec (claimed)
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