The current generation of the BMW 1 Series, which includes the M135i, is known as the F40 or 3rd generation and was first released in 2019. Powered by a turbocharged 2.0l inline-four engine, the M135i produces 306 hp and 332 lb-ft (450Nm) of torque through BMW’s xDrive all-wheel drive system. That means you can expect impressive performance no matter the weather - a very nice trait to have in the UK. Don’t worry, we haven’t forgotten about 0-62 mph times, you can expect to achieve this in around 4.8 seconds.
Available in 5-door only, this hatchback sports an entirely different design to that of the previous generation M140i. With a more aggressive factory-look, the M135i definitely stands out. To further enhance this, BMW individual colour options as well as M Performance Parts are available to add an extra touch of flair.
The F20 (5-door) and F21 (3-door) variants were the last of the M140i life cycle. We really hope it’ll one day return but for now we’ll continue to admire just how unique this car is. There are a few big reasons why the M140i has gained such a huge following, particularly in the UK car scene. It’s simply outrageous - in a good way of course.
Under the bonnet sits BMW’s famous B58 3.0l engine, an engine present in many M Performance vehicles as well as the MK5 Toyota Supra. In the M140i, the B58 produces 340 hp and 369 lb-ft (500 Nm) through the rear wheels only. Yes, you heard that right. Although an xDrive version of the M140i was produced, it never came to the UK.
Where the new M135i is only available with an automatic transmission, the M140i offers both automatic and manual options. As expected, opting for an automatic will provide snappier shifts, improved fuel economy, and you won’t have to worry about changing gear, of course. The manual alternative provides us, enthusiasts, the opportunity to continue to complete that motion ourselves.
Now, let's go through the key differences between the M135i and M140i.
As with most BMWs, there is a wide selection of option packs available that will further enhance different aspects of the driving experience. For the M135i, the following packages are available:
- M135i Pro Pack - 19" 557 M Bi-colour Alloy Wheels, Sun Protection Glass and Harman Kardon Surround Sound Audio System
- Comfort Pack - Heated Steering Wheel, Electric Bootlid, Comfort Access and Electric Memory Seats
- Technology Pack - Adaptive LED Headlights, High-Beam Assistant, Parking Assistant, Head-Up Display, Enhanced Bluetooth with Wireless Charging and WiFi hotspot
Options can also be specified individually outside of their packs (when bought new).
Due to it being an older generation BMW 1 Series, the M140i doesn’t compare too favourably in the tech department. However, you can still expect to find a satisfying level of helpful equipment on board. When buying used, you’ll have to pay close attention to what options are on the car, as depending on what year the car was built, some features may have been optional rather than standard. Here are our top picks:
- M Performance Limited Slip Differential (LSD) - this is essential for those who want to truly optimise the car’s performance. This mechanical rear axle differential ensures that should low traction be detected at one of the rear wheels, then more torque will be directed to the appropriate wheel to reduce slip, and in turn, improve traction
- Harman Kardon Sound System - for those who love to pump out some great tunes, the Harmon Kardon sound system upgrade is a must!
- Pro Navigation - this optional feature focuses on upgrading the iDrive infotainment system - a larger 8.8 inch display, as well as extra features such as split-screen capability, accompany the upgraded navigation system
M140i Shadow Edition - it’s important to consider this special edition version of the M140i when looking for your next car. This version has some unique exterior styling changes as well as improved standard equipment that would have been optional extras on the normal version of the car.
Both cars are a true joy to drive and offer fantastic performance as well as practicality. The M135i is certainly easier to live with and we’d definitely recommend it to those who wish to use it as a daily driver. The interior design and technology aboard is a significant step up from that of the M140i, especially on vehicles with option packages fitted.
Those with a family to think of will also benefit from the additional legroom and increased boot space. As well as this, the incredible levels of grip provided by the xDrive system really inspires confidence. The car is incredibly well-refined. Whether you wish to comfortably cruise around or experience its true performance potential, it can all be done using BMW’s fantastic customisable driving modes.
The M140i offers a thrilling driving experience and will be adored by those who love a rear-wheel-drive drivetrain. The larger, six-cylinder engine and additional power is certainly noticeable, especially in the mid to high rev range. The M140i edges the M135i in the fun-factor department and will also be a great option for those who like to drive on track from time to time. There is also more room for modification - should that be your cup of tea. While less of an all-rounder than the M135i, if you’re looking for one of the most ambitious hot-hatches of all time, this is your car.
Now it’s over to you. If you’re still unsure about which car is best for you, why not book a test drive to find out? You can also browse our current stock of both vehicles below.
