2020 BMW Z4 M40i Convertible

2020 MODEL
$63,700
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6.3

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2020 BMW Z4 M40i Convertible Complete In-depth Review & Buying Guide

Updated on: February 25, 2020
Aaron Smith's image

Aaron Smith

Automotive Journalist

The Z series roadsters by BMW have garnered a lot of love from the people since its inception. It has been so popular that the Z3 and the Z8 have been used in Bond movies. The 2020 Roadster does have a fresh design and a lot of controversies tagged to itself which we shall talk about, grab hold and get ready for the ride.

See detailed review »

Pros

Impressive MPG figures Driver Focused Cabin

Punchy Motor Response

Engaging Handling

Tech Loaded Interiors

Brimming with Safety Features

Cons

Slightly Unconventional Driving position

Seats just 2 people

What's New?

The Car arrives in it’s 3rd Generation in 2020 and is an All New Car


Features

vehicle bio

base price

$63700

bodystyle

2dr Convertible

passenger capacity

2

drivetrain

RWD

engine type

displacement

183 cu.in.

horsepower

254 hp @ 5000 rpm

torque

369 lbs.-ft. @ 1600 rpm

transmission

8 speed automatic

chassis

frame type

Unibody

suspension front

Independent front strut suspension w/anti-roll bar

suspension rear

Independent rear multi-link suspension w/anti-roll bar

brake rotors (f/r)

62.8/62.6

dimensions

wheelbase

97.2 in.

length

170.7 in.

width

73.4 in.

height

51.3 in.

curb weight

3287 lbs.

capacity

cargo volume

9.9 cu ft.

payload capacity

551 lbs.

fuel economy

city/combined/highway

24/27/32 mpg

ev range

328.8 mi.

highway range

438.4 mi.

warranty

basic warranty

4 yr./ 50000 mi.

drivetrain warranty

4 yr./ 50000 mi.

powertrain warranty

4 yr. / 50000 mi.

corrosion warranty

12 yr. / unlimited


Pictures

Exterior
Interior

Styles

 2020 BMW Z4 M40i Convertible in Alpine White color  2020 BMW Z4 M40i Convertible in Black Sapphire Metallic color  2020 BMW Z4 M40i Convertible in Glacier Silver Metallic color  2020 BMW Z4 M40i Convertible in Misano Blue Metallic color  2020 BMW Z4 M40i Convertible in Mineral White Metallic color
Alpine White

Vehicle images are guides only and may not reflect the model's exact specifications/features– exact specifications/features should be confirmed with the seller.

Ratings

Features

5.0

Engine And Performance

8.0

Fuel Economy

6.0

Interior

6.0

6.3

OVERALL RATING

Trims and Configurations

MSRP


 2020 BMW Z4 M40i Convertible Base

Base

power
382 hp @ 5500 rpm
fuel
Premium unleaded (recommended)
mpg
27 combined

$63,700


Style Prices MPG Engine Transmission Drivetrain Seats Colors
sDrive 2dr Convertible (3.0L 6cyl Turbo 8A) Starting at $63,700 MSRP (24/27/32) 382 hp @ 5500 rpm, 3L, Inline 6, premium unleaded (recommended)
8-speed shiftable automatic rear wheel drive 2

Expert Review

6.3

Overall Rating


The 2020 model is the 3rd Generation of the Z4 which gets a completely fresh design and the M treatment which makes it a potent performer. The 3.0L Twinscroll Turbocharged Inline Six puts out an impressive power number of 382HP and 369lb-ft of torque. There are a few M-specific components that assist this spectacle to achieve the levels of performance it comfortably sits at.

It does share many components with the 2020 GR Supra which has caused a stir among enthusiasts all over. BMW and Toyota have joined hands in developing the platform that both these cars share. Although there are many components that differentiate both these cars. They share a similar chassis and engine apart from that both these manufacturers have gone on to make their cars individually. The Supra is available as a Coupe and the Z4 comes as a soft-top convertible or Roadster as BMW prefers to call them.

2020 BMW Z4 M40i Convertible Front View
2020 BMW Z4 M40i Convertible Rear View

5.0/10
Features

 

8.0/10
Engine and Performance

 

6.0/10
Fuel Economy

 

6.0/10
Interior

 
 
 
 
 

2020 BMW Z4 M40i Convertible Features

5.0/10

The Z4 is offered in a single trim with a lot of standard features that add to the performance and luxury of the car. The Z4 has leather upholstery and the latest iDrive infotainment adds the premium touch to the interiors. The features and the luxury on offer are on a totally different spectrum compared to the 2nd Generation of the Z4.

Trim

BMW Z4 M40i

MSRP

$63,700

Features

LED Headlights

 

Electrically Operated Soft Top roof

 

10.25" Digital Instrument Cluster and 10.25" Center Display with Standard 10 Speaker 205W Audio System

 

Cloud-based Voice Control

 

7th Gen iDrive Multimedia System with 20GB Memory, 2 USB ports, Bluetooth, Apple Car Play

 

Electric Sport Seats with Integrated Head Rests

 

SensaTec/Vernasca Leather Upholstery

What do we recommend?

The availability of a single trim makes the purchase decision rather simple. There are a few options available to customize the vehicle according to personal choices and differentiability.

2020 BMW Z4 M40i Convertible Engine and Performance

8.0/10

BMW engines are known far and wide for the kind of performance they are capable of. The Z4 gets the 3.0L Twinscroll turbocharged Inline Six which is capable of producing 382HP of power and 369lb-ft of torque. The Twinscroll gives an instant boost to the engine due to the dual intakes that are paired with the sets of cylinders that complete one rotation together. It gives the engine a more naturally aspirated feel rather than the conventional turbo spool at higher RPMs making it all the more efficient in producing power.

2020 BMW Z4 M40i Convertible 3.0L Twin Turbo Inline 6 Engine

The transmission is smooth and well-timed for the best shifts. This goes a long way in complementing the power that the engine generates. The 8-speed automatic has the option to be manually controlled through the pedal shifters on the steering wheel making the drive more engaging.

Models

BMW Z4 M40i Convertible

Porsche 718 Boxster S convertible

Jaguar F-Type V6 Convertible

Mercedes-Benz SLC 43 AMG Convertible

MSRP

$63,700

$72,650

$74,245

$64,895

Engine

3.0L Twin Turbo Inline 6

2.5L Turbocharged Flat 4

3.0L Supercharged V6

3.0L Twin Turbo V6

Transmission

8 Speed Automatic Transmission

7 Speed PDK Dual Clutch

8 Speed Auto

9 Speed Automatic

Horsepower (hp)

382

350

340

385

Torque(lbs.-ft.)

369

309

332

384

The Merc performs better than the Z4 by a rather small margin. The Porsche comes in third leaving the Jaguar in the last spot. 

Acceleration

The twin-scroll turbocharged 3.0L inline-six has a massive reservoir of power which is unleashed with the lightest foot on the gas pedal. The acceleration is linear due to the nonexistent spool for the turbo. The transmission is quick to support the splurge of power oozing from the engine and keeping the shifts well-timed.

The 2020 BMW Z4 manages to demolish the 60MPH mark in under 4 seconds

The Beamer can power down city roads and tracks rather well and is a compelling challenger to a lot of high priced convertibles in the market. The Z4 is back and is one of the most promising cars from BMW in a while.

Models

BMW Z4 M40i Convertible

Porsche 718 Boxster S convertible

Jaguar F-Type 340HP Convertible

Mercedes-Benz SLC 43 AMG Convertible

0-60 MPH

3.9

4.4

5.1

4.6

Quarter mile

12.3

12.8

13.8

14.0

Engine

3.0L TwinScroll Turbo Inline 6

2.5L Turbocharged Flat 4

3.0L Supercharged V6

3.0L Twin Turbo V6

Emission

(Tons/yr of CO2 Emissions @ 15K mi/year)

N/A

7.3

N/A

7.7

The Z4 outshines the competition in the 0-60 and quarter-mile. Mercedes is outrun by the Porsche which takes the second spot in this comparison. The F-Type struggles to keep up with its peers.

Ride and Handling

BMWs are known for their sheer fun drive dynamics which differentiate it from the rest of the cars in the market. The chassis has an almost perfect weight distribution making it a great handling car. With the M-Differential the power going to the wheels is modulated and made easier to handle. The car feels planted and gives the driver enough confidence to go about on their spirited driving without having to worry about the car giving up.

2020 BMW Z4 M40i Convertible Rear View

The Z4 gets a lot of the M treatment with the M-Sport suspensions, brakes, and diff. The different drive modes in the Z4 utilize all these components to modulate the settings in every drive mode giving each one their own specific set of dynamics. The suspensions lower as the more aggressive drive modes are selected.  the differential modulates the torque going to the individual wheels on corners making it much easier to enter and exit corners.

Braking

The M-Sport brakes do a wonderful job in terms of controlling the power surging through the wheels. The brakes are electronically monitored with various additional features like Cornering Brake Control and Dynamic Brake Control to utilize the maximum potential of the brakes. The brake pedals are responsive and get the job done without having any issues maintaining a straight line while braking. 

Model

BMW Z4 M40i Convertible

Porsche 718 Boxster S convertible

Jaguar F-Type 340HP Convertible

Mercedes-Benz SLC 43 AMG Convertible

Brake Front (in.)

13.7

13

14

14.2

Brake Rear (in.)

12.8

11.7

12.8

13

Curb Weight (lbs.)

3457

3054

3521

3541

60-0 MPH (ft.)

101

110

113

108

The fastest to stop here is the BMW owing to the big brakes and the lighter frame that it sits on. It is shortly followed by the Merc which bags the second spot here followed by the Porsche. The Jag fails to keep up here as well.

2020 BMW Z4 M40i Convertible Fuel Economy

6.0/10

The Twinscroll turbo and the efficient inline six do return a decent fuel efficiency numbers for the Z4. With the stellar performance numbers, the Z4 still manages to return an efficiency figure of 24MPG in the city, a feat which various sedans fail to achieve. 

Model

BMW Z4 M40i Convertible

Porsche 718 Boxster S convertible

Jaguar F-Type V6 Convertible

Mercedes-Benz SLC 43 AMG Convertible

MPG (city)

24

20

20

20

MPG (highway)

31

26

28

29

MPG (combined)

26

22

23

23

Fuel Tank Capacity

13.7

16.9

18.5

15.9

Range(City/Hwy) in Miles

329/425

338/439

370/518

318/461

The Z4 wins this comparison by a landslide with probably the best MPG figures in the entire segment. All the other cars in the line up have similar City MPG figures but the Merc delivers the best efficiency out of the lot on highways. The Jag has the best range owing to the large fuel tank capacity.

2020 BMW Z4 M40i Convertible Interior

6.0/10

The dimensions of the Z4 are well designed to integrate the best cabin space for the two. The seats are comfortable with good bolstering for the best support during a drive and functionalities like heated and ventilated seats. The seats are electronically adjusted to provide the best seating position with a telescopic steering wheel. The center console is driver-focused allowing ease of operation which also separates the driver and passenger seats.

2020 BMW Z4 M40i Convertible Front Seats

The soft top can be operated through the key and is operable until the speeds of 30MPH. The noise insulation with the top up is excellent allowing barely any noise to get through into the cabin. The level of noise cancellation offered in spite of it being a soft top is impressive. 

Model

BMW Z4 M40i Convertible

Porsche 718 Boxster S convertible

Jaguar F-Type V6 Convertible

Mercedes-Benz SLC 43 AMG Convertible

Passenger capacity

2

2

2

2

Front (Head/Shoulder/Leg) (In.)

38.9/54.3/42.2

N/A

37.0/56.5/43.0

38/52.2/42.5

Rear (Head/Shoulder/Leg) (In.)

-

-

-

-

The F-Type has the most spacious cabin room but it loses out in terms of comfort and features. The Merc has slightly better legroom than the BMW while the BMW has a better shoulder room, making it difficult to choose the better one here. Data for the Porsche is not available.

Interior Features

The Z4 has the best of everything on offer due to which it has premium interiors with the best quality materials used all around. Some of the features that make the Z4 swoon-worthy are.

  • 14 Way Powered M Sport Seats with Memory
  • Auto-Dimming Interior RearView Mirror
  • Rearview Camera
  • 3 Stage Heated Seats and Steering wheel
  • SensaTec Upholstery and Dashboard
  • Automatic Climate Control
  • Engine Start/Stop Button
  • BMW Ambient Lighting
  • Power Windows with one-touch push-pull open/close for driver-side

Infotainment

The latest iDrive UI integrated into the Z4 makes it much more convenient to use and access. The 10.25inch touchscreen unit can be controlled via touch and the central controller which is signature in a BMW car.

2020 BMW Z4 M40i  10.25" Infotainment Screen and Instrument Cluster

Infotainment Features

  • 10.25" Infotainment Screen and Instrument Cluster
  • iDrive 7.0 with touchpad controller, voice control and Navigation
  • Bluetooth, 2 USB Ports, 20GB Multimedia storage
  • BMW Remote Services
  • BMW Connected App
  • Leather Wrapped Steering Wheel with Audio, Cruise and Bluetooth control

Cargo Capacity

The BMW Z4 M40i is a proper roadster in terms of both performance and practicality. The 9.9cu.ft. Of space on offer ranks as one of the best among its class. Inside the cabin, you will have a lot of cubby holes and other nifty storage spaces for keeping bottles, mobile phones, and other handy stuff.

Model

BMW Z4 M40i Convertible

Porsche 718 Boxster S convertible

Jaguar F-Type V6 Convertible

Mercedes-Benz SLC 43 AMG Convertible

Cargo Volume with rear seats up (ft.3)

9.9

9.6

7.3

10.1

The Mercedes-Benz SLC 43 AMG manages to hold a candle against the Bimmer in terms of cargo capacity while all others in this comparison, fall short of the same. The Jaguar comes in the last spot of this comparison while the Porsche has to suffice with the 3rd spot.

2020 BMW Z4 M40i Convertible
2020 BMW Z4 M40i Convertible
2020 BMW Z4 M40i Convertible
2020 BMW Z4 M40i Convertible
2020 BMW Z4 M40i Convertible
2020 BMW Z4 M40i Convertible
2020 BMW Z4 M40i Convertible
2020 BMW Z4 M40i Convertible
2020 BMW Z4 M40i Convertible
2020 BMW Z4 M40i Convertible

2020 BMW Z4 M40i Convertible Exterior

The cosmetic differences between the previous-gen Z4 and the current line up are worlds apart. The 2020 model gets the modernized signature BMW look with the larger kidney grills and the headlights placed on either edge. The kidney grille also acts as an air intake supplemented by the air vents on the lip of the front fascia giving it a more aggressive demeanor. 

BMW Z4 M40i Convertible 3 Quarter View

A shorter wheelbase and wider body give the 2020 Z4 better handling dynamics and improve the agility as well. The light framework goes a long way in the driving ability of the Z4. 

On the sides, the intake vent from the front has an outlet behind the wheels for ensuring the tires don't heat up during a spirited drive session. The Z4 exudes pure cosmetic dominance with the roof down.  

The rear houses the slim taillights that complement the entire design well. The integrated spoiler above the trunk does contribute to the design style. The diffuser has the typical dual exhaust which looks simply stunning with the chrome tips.

Model

BMW Z4 M40i Convertible

Porsche 718 Boxster S convertible

Jaguar F-Type V6 Convertible

Mercedes-Benz SLC 43 AMG Convertible

Curb weight (lbs.)

3457

3054

3521

3541

Length(in)

170.7

172.4

176.0

163.1

Width(in)

73,4

70.9

74.2

71.5

Height(in)

51.3

50.4

51.5

51.3

Ground clearance (in)

N/A

N/A

N/A

4.1

Wheelbase (in)

97.2

97.4

103.2

95.7

The Porsche is the lightest out of all the cars in the line up followed by the BMW. On the contrary, the BMW has the shortest wheelbase marginally lesser than the Porsche. These two aspects go a long way in benefitting the handling of the car, the BMW and Porsche do that better than most cars here.

Exterior Features

The Z4 with its roof down is definitely a looker, probably one of the most gorgeous production cars on offer by BMW. Some of the features that make it such a delight to look at are.

  • LED Headlights, Foglights, and Taillights with Auto Headlight Control
  • Black Softtop
  • Heated Glass Rear Window
  • White Side-Turn Indicator lenses
  • 18" M Alloy Wheels
  • Auto-Dimming Powered Exterior Mirrors with memory
  • Rain-Sensing Windshield Wipers
BMW Z4 M40i Exteriors
2020 BMW Z4 M40i Convertible
BMW Z4 M40i Side profile
2020 BMW Z4 M40i Convertible
BMW Z4 M40i Rear 3-Quarter
2020 BMW Z4 M40i Convertible
BMW Z4 M40i Rear profile
2020 BMW Z4 M40i Convertible
Red BMW Z4 M40i Front
2020 BMW Z4 M40i Convertible
Red BMW Z4 M40i Side Profile
2020 BMW Z4 M40i Convertible

2020 BMW Z4 M40i Convertible Safety

BMW has been always conscious about passenger safety since before the mandatory regulations came into action. The Z4 is treated no differently with various sensors all around the car to ensure occupant safety in all conditions. As the car has just been added to the BMW line up, it is yet to undergo the NHTSA and IIHS crash test. The ratings for the same are not available either, but the sturdy aluminum alloy chassis does have the grit to withstand collisions.

Standard Safety Features on offer

  • Cornering Brake Control
  • Anti-Theft Alarm System
  • BMW's Active Protection system
  • BMW Assist eCall
  • Active Knee Protection
  • Coded Driveaway Protection
  • Dual Front and Side Impact Airbags
  • Rollover Protection System
  • Central Locking System with Double-Lock anti-theft feature

2020 BMW Z4 M40i Convertible Competition

BMW Z4 M40i vs. Jaguar F-Type V6

The F-Type has a unique English air about it which makes it stand out in a crowd. But sadly the Brit is beaten by the Bavarian, with better interiors and performance the BMW stands in a different league altogether. With the established difference in every comparison makes the BMW a better pick in this head to head. Not that it matters but the BMW is lighter on the pockets.

2020 Jaguar F-Type V6

BMW Z4 M40i vs Porsche 718 Boxster S

Porsche and BMW cater to a crowd that is very loyal to their brand. The drive experience is also very versatile while the Porsche is all about a natural drive and handling the BMW does do that with electronic assists. The luxury and comfort of the BMW are comparatively better than that of the Porsche. This is all a personal choice on which brand and car are better.

2020 Porsche 718 Boxster S

BMW Z4 M40i vs. Mercedes-Benz SLC 43 AMG

The brand rivalry between Merc and BMW is as old as time. The SLC is a typical Merc with fabulous interiors and the AMG enhanced engine that deliver an equally fabulous performance. The BMW is just exhilarating to drive and be in. Again this boils down to brand loyalty and preference as both these cars cater to different crow entirely.

2020 Mercedes-Benz SLC 43 AMG

 

2020 BMW Z4 M40i Convertible Final Verdict

The Z4 is a simply amazing vehicle and we could not ask for a better successor to the old and fable E30 Z4. The balance between luxury and performance is commendable with the right amount of power and handling as well. Be it a track or city roads the BMW will leave one wanting to spend some more time behind the steering wheel. For the kind of all-round performance, the Z4 is a good pick for the price tag it sits at.