Mercedes-Benz AMG SL vs BMW M8 Coupe Competition Comparison 2026: Price, Mileage, Features

Comparison overview: The Mercedes-Benz AMG SL starts at ₹2.34 Cr and the BMW M8 Coupe Competition at ₹2.38 Cr, a difference of ₹4.00 L ex-showroom. On-road in New Delhi that gap becomes roughly ₹4.44 L. Here is what the extra money actually buys.

Engine and performance: The Mercedes-Benz AMG SL uses a 3,982cc Petrol making 469.35bhp and listed torque with Automatic. The BMW M8 Coupe Competition uses a 4,395cc Petrol making 616.87bhp@6000rpm and listed torque with Automatic.

Mileage and running cost: The Mercedes-Benz AMG SL Petrol Automatic is rated at 11 kmpl and the BMW M8 Coupe Competition Petrol Automatic at 8.7 kmpl. At 1,000 km a month, the Mercedes-Benz AMG SL saves you about ₹2.52 K a month and ₹30.28 K a year on fuel.

What one gives that the other does not: The Mercedes-Benz AMG SL adds Side Airbag-Rear, Curtain Airbag, Anti-Pinch Power Windows, Knee Airbags and Impact Sensing Auto Door Unlock. The BMW M8 Coupe Competition adds Child Safety Locks, ISOFIX Child Seat Mounts, 360 View Camera, Adjustable Headlamps and Alloy Wheels. The rest of both spec sheets is shared.

Which one should you buy?

Buy the Mercedes-Benz AMG SL if you drive mostly in the city, you want the lower running cost, and you would rather keep the ₹4.00 L for your down payment than spend it on features.

Buy the BMW M8 Coupe Competition if you do regular highway runs, you carry luggage or a pram often, and you want Anti-lock Braking System (ABS) without waiting for the next facelift.

The one thing that settles it: Mercedes-Benz AMG SL offers Side Airbag-Rear.

Before you sign anything:

Ex-showroom price is not what you pay. Add registration, road tax, insurance and handling, and expect the final figure to land ten to twelve percent higher. Road tax changes state to state, so a car that costs the same in two cities does not cost the same to own.

Ask the dealer four things before you book. What is the current waiting period for the variant you want. What is the on-road figure.

Then drive both cars back to back on the same day, on a road you actually use. Take your family. Put your usual luggage in the boot. Most people decide in the first ten minutes, and it is rarely for the reason they expected.