The BMW M5 CS and M5 Competition models are frequently pitted against each other, particularly when discussing performance metrics. A key question for automotive enthusiasts is whether the M5 CS truly packs more horsepower under the hood, or if its superior acceleration is primarily a result of shedding weight. Let’s examine the horsepower specifications and performance figures to clarify the differences.
Horsepower and Torque Specifications
According to rigorous testing by Car and Driver, the BMW M5 CS delivers 627 horsepower at 6000 rpm. In comparison, the BMW M5 Competition is rated at 617 horsepower at the same 6000 rpm. Both variants share an identical torque output of 553 lb-ft, available from 1800 rpm. The data indicates a minor horsepower increase for the CS model.
Weight and Performance Impact
Beyond horsepower, a significant factor in performance is vehicle weight. The BMW M5 CS boasts a curb weight of 4096 lbs. The M5 Competition, however, is heavier at 4237 lbs. This reduction in weight for the CS contributes markedly to its quicker acceleration. The 0-60 mph sprint is achieved in just 2.6 seconds by the CS, while the Competition takes 2.8 seconds. Similarly, the quarter-mile times are 10.6 seconds for the CS and 10.9 seconds for the Competition.
Conclusion: Horsepower vs. Weight in M5 CS Performance
While the BMW M5 CS does offer a slightly higher horsepower figure compared to the M5 Competition, the performance advantage appears to be a combination of this marginal power increase and, more crucially, a lighter overall weight. Whether this power difference arises from specific engine tuning or other modifications requires deeper analysis. However, the performance data unequivocally demonstrates that both the M5 CS and M5 Competition are exceptional high-performance sedans, each with its own distinct performance profile.
