BMW X6 vs BMW M4 CS Comparison 2026: Price, Mileage, Features

Comparison overview: The BMW X6 starts at ₹1.78 Cr and the BMW M4 CS at ₹1.79 Cr, a difference of ₹1.00 L ex-showroom. On-road in New Delhi that gap becomes roughly ₹1.11 L. Here is what the extra money actually buys.

Engine and performance: The BMW X6 uses a 4,395cc Petrol making 523bhp@5500rpm and listed torque with Automatic. The BMW M4 CS uses a 2,993cc Petrol making 543bhp@6250rpm and listed torque with Automatic.

Mileage and running cost: The BMW X6 Petrol Automatic is rated at 7.89 kmpl and the BMW M4 CS Petrol Automatic at 9.7 kmpl. At 1,000 km a month, the BMW M4 CS saves you about ₹2.48 K a month and ₹29.80 K a year on fuel.

What one gives that the other does not: The BMW X6 adds Heads-Up Display (HUD), Antenna, Tyre Size, Lighting and Forward Collision Warning. The BMW M4 CS adds Seat Belt Warning, Door Ajar Warning, Engine Immobilizer, Anti-Pinch Power Windows and Speed Alert. The rest of both spec sheets is shared.

Which one should you buy?

Buy the BMW X6 if you drive mostly in the city, you want the lower running cost, and you would rather keep the ₹1.00 L for your down payment than spend it on features.

Buy the BMW M4 CS 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: BMW X6 offers Heads-Up Display (HUD).

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.