2021 BMW X4 M40i SUV


Ranked #8 in Compact Suv

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Starting MSRP 


Key Spec of 2021 BMW X4 M40i SUV
fuel economy


fuel type



382 hp @ 5800 rpm

basic warranty

4 yr./ 50000 mi.

2021 BMW X4 M40i SUV Price, Review, Ratings and Pictures

Updated on: December 28, 2021

Nathan Dyer's image
Nathan Dyer 

Senior Editor

The 2021 BMW X4 M40i is barely an SUV and is neither a wagon but for what it is, the drive is amazing. The X4 handles like how a BMW should and has nimble steering along with a chassis that has been taken from the BMW X3 and tweaked to eke out more aggressive driving dynamics. As for the powertrain, the coupe SUV amalgamation is powered by a turbocharged 3.0L V6 under the hood that churns out 382 horsepower and 365 lb-ft of torque, which comes at a very low 1,520 RPM that helps in getting maximum torque whenever required. 

ProsConsWhat's New

Smooth, powerful, and fuel-efficient engine

Coupe roofline sacrifices rear room and cargo space

Added SiriusXM and Android Auto as standard equipment

Nimble handling

Huge price premium from the BMW X3 M40i 

Changes made to the optional packages

Bevy of optional features on offer

Over All Rating


Out of 10

Pricing and Features7.00
Engine and Performance8.00
Fuel Economy5.00
Notable Rankings

#8 in Compact Suv

#13 in Suv

Pictures & Videos


Base$61,700 onwards

  • Keyless entry
  • Parking sensors
  • Upgraded front seats
  • Wireless device charging

Colors and Styles

2021 BMW X4 M40i SUV in Alpine White color
Alpine White

Expert Review, Pricing Analysis and Buying Guide

The 2021 BMW X4 M40i is priced at $61,700 and for the price, it goes against three other German cars namely, the Mercedes-AMG GLC 43 Coupe, the Audi SQ5 Sportback, and the Porsche Macan S. Although the Macan isn’t a coupe SUV but for the price, it offers tremendous value and the best driving experience of the lot. 


The 2021 BMW X4 M40i is available as a standalone trim in the X4 range that comprises three trims - the xDrive 30i, the M40i, and the all-out X4 M - all of which have been reviewed separately. The M40i is the more powerful trim in the non-M range and has everything that can be had in the segment. Along with that, the German manufacturer offers quite a lot of packages that add various comfort features like heated seats, a heated steering wheel, a Wi-Fi hotspot, a wireless charging pad, and ambient interior lighting. A short summary of the highlighting features on offer is given below:





Key features

Keyless entry


Wireless device charging


Leather-wrapped sports front seats


M Sport 19-inch wheels


M Sport steering wheel


LED headlights


Panoramic sunroof


Power-folding and heated side mirrors


Sport suspension


10.25-inch touchscreen navigation system


16-speaker 600 watts Harman Kardon Surround System


Apple CarPlay and Android Auto smartphone integration

Which trim should you buy in the 2021 BMW X4 M40i?

Since the M40i is available as a standalone trim, it is the one we recommend. As for the options list, the standard list is pretty expansive, and hence, recommending a package over the standard features purely depends on the convenience one is looking for in the car. That said, the Executive Package is the one best suited for the car because it brings quite a lot of features like heating functionality to the steering wheel and front seats, Wi-Fi hotspot, wireless charging, adaptive headlights, ambient interior lighting, parking sensors, parallel parking assist, and a surround-view camera.

Engine and Performance

The new BMW X4 M40i has a buttery smooth engine under its hood, configured as a turbocharged 3.0L inline-6 that churns out a massive 382 horsepower and 365 lb-ft of pulling power. This serious output figure is sent to all four wheels, as standard, via an 8-speed automatic torque converter unit that shifts so fast that it eliminates the need for a dual-clutch unit. As for the AWD system, the power is split 60% to the rear and 40% to the front which ensures optimum traction every time the accelerator is floored. It sprints from 0-60 mph in 4.4 seconds and can complete a quarter-mile run in 13.1 seconds, making it one of the quickest SUVs, in the comparison. 


2021 BMW X4 M40i

2021 Audi SQ5 Sportback Premium Quattro

2021 Mercedes-AMG GLC 43 4MATIC

2021 Porsche Macan S







Turbocharged 3.0L Inline-6

Turbocharged 3.0L V6

Twin-Turbocharged 3.0L V6

Turbocharged 3.0L V6







8-speed automatic

8-speed automatic

9-speed automatic

7-speed PDK automatic


382 hp @ 5,800 RPM

349 hp @ 5,400 RPM

385 hp @ 6,100 RPM

348 hp @ 5,400 RPM


365 lb-ft @ 1,520 RPM

369 lb-ft @ 1,370 RPM

384 lb-ft @ 2,500 RPM

354 lb-ft @ 1,360 RPM

0-60 MPH 

4.4 seconds

4.7 seconds

4.3 seconds

4.7 seconds


13.1 seconds

13.7 seconds

13.1 seconds

13.3 seconds


155 MPH

155 MPH

130 MPH

157 MPH

The Audi comes in at a very lucrative price and gets a turbocharged 6-cylinder engine, just like all the other SUVs in the comparison. It manages to do an impressive 0-60 MPH run of 4.7 seconds. Though quick, the Q5 Sportback is slower than both the X4 and the twin-turbocharged GLC 43. The Porsche Macan picks up its pace during the quarter-mile run and completes the same in 13.3 seconds only despite having a similar 0-60 MPH run to the Audi. 

How well does the 2021 BMW X4 M40i handle?

The seating position in the 2021 BMW X4 M40i is higher than the other cars on the road which lends impressive visibility in the front. The big blindspots of the A-pillar do eat up into the visibility, while the tiny rear window and the massive rear blindspots don’t help the cause either. The 8-speed automatic gearbox is a breeze to operate and the shifts are very slick. The torque surge is instant and the overall power plant feels very peppy despite the car’s weight. 

The suspension is a bit on the firm side due to the sporty character of the M40i, which is also felt when driving in the city. Opting for the adaptive suspension proves to be very useful since the comfort mode slackens of the suspension for a better drive quality while absorbing all the undulations well. On the twisty roads, the sporty setup of the car comes into play and sharpens the throttle response, while adding more weight to the steering and stiffening up the suspension. 

On the highway, the drive is pretty smooth with the powertrain combination doing its job well, while the suspension handles the task of smoothing out the drive. The seats are very comfortable for long-distance driving and provide a lot of support. The autonomous driving features also lend a lot of comfort to the driver while doing longer distances. The off-roaders will be happy to know that the wading depth of the X4 is similar to the old Land Rover Defender, while the Bimmer also being a comfortable car on-road. 

2021 BMW X4 M40i Braking Performance

The 2021 BMW X4 M40i is the sportier variant of the X4 SUV that also happens to have a strong braking performance from the upgraded braking hardware from the sDrive 30i. The M40i is stopped by a pair of 13.7-inch rotors at the front and 13.5-inch rotors at the rear, with the front having more calipers than the Base trim. Couple this hardware with the German sophistication, and you’ll get a braking distance of just 156 feet when braking hard from 70 MPH. The braking distance is mighty impressive considering the nearly 4,300 lbs curb weight the Bimmer carries. 


2021 BMW X4 M40i

2021 Audi SQ5 Sportback Premium Quattro

2021 Mercedes-AMG GLC 43 4MATIC

2021 Porsche Macan S

Brake Rotors: Front (in)





Brake Rotors: Rear (in)





Curb Weight (lbs)





70-0 (feet)





The Audi stops in the least distance despite being the heaviest in the class and not having the biggest rotors of the comparison. Following the Audi is the AMG, which takes 6 feet more while the Bimmer takes 8 feet more. The Porsche stops the latest of the lot, stopping in 163 feet from 70 MPH despite being nearly 2.5% lighter than the Audi. 

Fuel Economy

The 2021 BMW X4 M40i is powered by a turbocharged inline-6 which has proved itself to be one of the most efficient engines out there. That said, the EPA rates this power mill at 21 MPG in the city and 27 MPG on the highway, for a combined 23 MPG from its 17.2-gallon fuel tank that ensures fewer stops while driving long distances. 


2021 BMW X4 M40i

2021 Audi SQ5 Sportback Premium Quattro

2021 Mercedes-AMG GLC 43 4MATIC

2021 Porsche Macan S

MPG (City)





MPG (Highway)





MPG (Combined)





Fuel Capacity (Gallons)





Range (City/Highway/Combined, in Miles)





The Bimmer’s tank might not be the largest of the lot but the efficient power plant ensures that the MPG figures are the highest, while all other SUVs average mileage of 20 MPG. The 17.2-gallon fuel tank of the X4 M40i adds a lot to the range in the city. On the highway, the Porsche Macan S’s even-bigger tank adds 11 miles more to the range, while giving it a mile advantage combined over the Bimmer. The worst-hit car is the Mercedes-AMG due to the twin-turbocharged mill that compromises fuel economy for output. 


The 2021 BMW X4 M40i gets a premium cabin that is covered in leather and soft-touch material all around. The door panels get a tastefully done brushed aluminum trim and some carbon fiber motif along with a very classy-looking contrast stitching on the door handles and the armrest. The door pockets are huge and can carry a couple of water bottles easily, along with a Whopper. 

The dashboard gets soft-touch material as well along with the contrast stitching and silver trim. The glove box is huge and can carry a box of Twinkies inside. The center console gets all the controls for the AC and for the infotainment system as well which we’ll cover in a bit. The controls are very intuitively laid out. There is huge cubby storage that also houses two cup holders and a 12V socket. The center armrest is very soft and comfy, and can also carry a box of Twinkies as well. 

The seats are donned in upgraded leather, while the front seats have been upgraded to M Sport ones that provide a lot of support via solid bolstering. The leather seating surface is soft and feels very comfortable even for long drives on the highways. The stitch work feels very tasteful, while the M badging on the headrests adds a lot of flair to the seats. The front seats get heating and ventilation along with power adjustability for both the driver and passenger.

The rear door panels carry over similar treatment as the front door panels, and the same materials as well. Talking about the room inside, there is plenty even for people who are 6 feet tall. Any taller than that and the headroom gives in to the sloping roof. The back of the front seats is plastic and there are no pockets. In the center console, there are two AC vents, some AC controls, a 12V socket, and a small cubby to store Jolly Ranchers. The rear seats get a very similar design to the front seats and also carry over similar comfort levels. 


2021 BMW X4 M40i

2021 Audi SQ5 Sportback Premium Quattro

2021 Mercedes-AMG GLC 43 4MATIC

2021 Porsche Macan S

Seating Capacity





Front Row (Headroom/Shoulder Room/Leg Room; in inches)





Rear Row (Headroom/Shoulder Room/Leg Room; in inches)





Trunk Capacity (cubic feet)





The cargo area opening is a bit smaller than the X3 but still has electric assist for added convenience. The rear seats can be folded down in a 60:40 split via a handle on either side of the boot. There are a couple of 12V sockets for more versatility while the tethering hooks make daily grocery shopping easy. There are metal scuff plates to save the paintwork while loading and unloading stuff. 

The Audi SQ5 Sportback offers the most space inside the cabin but the headroom takes a hit. The AMG gets very close to the Bimmer as well but the Bimmer takes the overall win by providing a big cabin and the largest trunk capacity in the comparison. The Macan’s interior dimensions aren’t available but it is roughly similar to the Mercedes-AMG, albeit a bit less in shoulder room. The X4’s cabin has a very upmarket feel and is very intuitively laid out, with some of the highlighting features being:

  • Panoramic sunroof
  • Leather upholstery
  • M Sport seats
  • Wireless device charging
  • Keyless entry
  • M Sport steering wheel
  • Dual-zone climate control

What’s there to keep you entertained in the 2021 BMW X4 M40i?

The 2021 BMW X4 M40i carries a massive 10.25-inch touchscreen that sits in the middle of the dashboard. The graphics on the system are top-notch and the animations and transitions are the smoothest of all the infotainment systems out there. Everything is laid out perfectly and in concise menus to keep the navigation easy. 

In terms of features, the system gets Android Auto compatibility for the 2021 model year, and already has Apple CarPlay and Bluetooth for pairing smartphones. In terms of audio, the system comes paired to a 600 Watt 16-speaker Harman Kardon system that blasts music in surround sound for a complete audio experience. Some of the highlighting features of this infotainment include:

  • 10.25-inch touchscreen
  • Apple CarPlay and Android Auto compatibility
  • Bluetooth
  • SiriusXM
  • BMW iDrive
  • 16-speaker Harman Kardon system

The 2021 BMW X4 M40i is based on the BMW X3 but has a sloping roofline that has a very distinct appeal to it. The price bump aside, the sloping roofline does eat up into the space but still, the X4 remains spacious enough. As for the front fascia, it is very similar to what the X3 looks like, with the M40i adding in the M Sport package for an even aggressive look via different alloy wheel designs and revised fascia with more functional vents. 

To the side, the X4 M40i has a very prominent styling line on either side of the body that extends from the front quarter panel to the rear door and adds a lot of sporty character to the car. The sloping roofline and the big 19-inch wheels also add to the looks while also making the car very good for having fun around the twisties. The rear has the standard affair of LED lights, car badging, the Bimmer logo, and dual exhaust pipes to emit the inline-6 symphony. 


2021 BMW X4 M40i

2021 Audi SQ5 Sportback Premium Quattro

2021 Mercedes-AMG GLC 43 4MATIC

2021 Porsche Macan S

Curb Weight (lbs)





Length (in)





Width (in)





Height (in)





Ground Clearance (in)





Wheelbase (in)





In terms of tipping the scales, the Audi SQ5 does that with the highest curb weight while the Mercedes-AMG saves a lot in terms of bulk, despite a coupe-like shape. The BMW is the one with the biggest dimensions overall with a manageable ground clearance that aids a lot in soaking up the undulations of the road. The car looks aggressive with all the styling elements and also adds a lot of character with the strong body lines and big wheels. Some of the highlighting aspects of the Bimmer are:

  • M Sport 19-inch wheels
  • M Sport revisions to the front and rear fascia
  • Sport suspension
  • Power-folding and heated side mirrors
  • LED headlights
  • Power liftgate

The 2021 BMW X4 M40i has been made with all the required passive and active safety features that one would expect from a car of this segment. The car has a lightweight body that shares a similar platform to the X3 and hence has a light shell without compromising on the overall strength and rigidity of the chassis. In terms of safety features, it comes standard with a forward collision mitigation system, lane departure warning, and blind-spot monitoring with rear cross-traffic alert. To add to this, the German manufacturer offers the following features as a part of its Driver Assistance Professional package and Executive package:

  • Parallel parking assist
  • Surround-view camera
  • Parking sensors
  • Adaptive headlights
  • Adaptive cruise control
  • Front cross-traffic alert
  • Lane keeping assist

2021 BMW X4 M40i Vs. 2021 Audi SQ5 Sportback Premium Quattro

The Bimmer offers a more powerful engine that has better fuel economy and can also squeeze out more range than the Audi. The handling characteristics are superb and the X4 hides its weight very well. The Audi gets a sophisticated Quattro AWD system that is better than BMW’s xDrive when it comes to enthusiastic driving. The car also stops better and has a good punch low down in the RPM to make city driving fun as well. 

2021 BMW X4 M40i Vs. 2021 Mercedes-AMG GLC 43 4MATIC

If the BMW’s acceleration is rapid, the AMG’s is like a punch in the face. The launch is violent but the 4MATIC helps keep traction levels high and help grip more. The car is very similar to the Bimmer in terms of the acceleration times but suffers a lot when it comes to fuel economy in the city. The Bimmer gets more range out of its inline-6, while also getting more range despite very similar tank capacities. It also gets a very well-appointed interior with superb fitment quality. 

2021 BMW X4 M40i Vs. 2021 Porsche Macan S

The Porsche’s handling is undoubtedly better than the BMW’s because of all the pedigree it has been pumped with. The interior is very sporty and the seats are comfortable for long distances. The performance is solid and the Macan’s PDK gearbox has a serious advantage over BMW’s torque converter unit when it comes to shift times. The Bimmer has a better ride quality, a bigger and posher cabin, more trunk capacity, and more range as compared to the Macan, making it a very good option for daily commutes. 

Final Verdict

The 2021 BMW X4 M40i gets the trophy for being the most comfortable and the most daily-able car in its class with a very powerful engine and superior handling capabilities that are given a silver lining with the adaptive suspension on offer. The interior is very posh and has a solid upmarket feel to it with the materials used and the visual delight of the infotainment system, which is one-upped by a stupendous Harman Kardon sound system.


vehicle bio
base price


body style

4dr SUV

engine type

183 cu in

horse power

382 hp @ 5800 rpm


368 lb.-ft. @ 1800 rpm


8 speed Automatic


187.4 in


112.8 in


76.3 in

curb weight

4323 lbs


63.8 in

Ground Clearance

7.2 lbs

passenger volume

97.8 cu ft

cargo volume

50.5 cu ft

passenger capacity

5 Seats

basic warranty

4 yr./ 50000 mi.

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