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7 used BMW 3 Series M340i cars for sale

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What is the BMW 3 Series M340i?

Grey BMW 3 Series M340i from the front

The BMW 3 Series M340i is one of two high-performance iterations of the popular BMW 3 Series. Building on the original model, it delivers breathtaking performance and an array of innovative features, appealing to those who value potent engines and exceptional driving dynamics.

At launch, the M340i represented BMW’s first performance variant of a 3 Series model. Taking elements from the BMW M3, it provided an intermediate step between this full-blown sports car and the regular 3 Series trims. As such, it provided a strong rival to vehicles such as the Audi S4 and Mercedes-Benz AMG C43.

Two body styles are available for the BMW 3 Series M340i: saloon and touring (estate). It uses the German manufacturer’s xDrive system to offer outstanding control and an M Sport differential to provide a rear-biased power delivery. Sitting 10mm lower than the other 3 Series variants, it features exclusive styling elements such as a trapezoidal exhaust, 18-inch alloy wheels and matt black detailing.

BMW 3 Series M340i history

The BMW 3 Series first arrived in the UK in 1975 with saloon and convertible body styles available. A success story from the outset, the model went through five subsequent generations before the Mk7 launched in 2018. It remains as popular today, suiting family motorists, business users and those for whom practicality and space are priorities.

Introduced at the LA Motor Show in 2018, the saloon M340i arrived in showrooms the following year. The touring version followed in November 2019. It offered customers high levels of practicality in addition to standout performance. Under the bonnet is a 3.0-litre, six-cylinder turbocharged petrol engine. It hasan eight-speed automatic transmission. Producing 369bhp and 500Nm of torque, it takes the saloon from 0 - 62mph in just 4.4 seconds. The touring achieving 0-62mph in 4.6 seconds.

Performance on the M340i benefits from M Sport Suspension, an M Sport limited slip differential and M Sport brakes. The car is also equipped with BMW’s xDrive system for the most traction in challenging conditions.

All variants of the 3 Series – including the M340i – received an update in 2022. This included a series of technological improvements, such as the addition of the Curved Display interface.This replaced the previous 8.8-inch Control Display. Combining a 12.3-inch floating instrument cluster with a 14.9-inch touchscreen for infotainment, it created a sleeker look in the cabin.

Where does the BMW 3 Series M340i sit in the range?

BMW 3 Series M340i front interior seats, centre console and gear selector, dashboard, steering wheel and infotainment screen

The BMW M340i sits at the top of the Mk7 BMW 3 Series range with its diesel counterpart, the M340d. Both variants stand out from the rest of the lineup thanks to sportier aesthetics, refined driving dynamics and premium interiors. The M340i’s performance is only topped by the M3 sports car.

What features and equipment does the BMW 3 Series M340i have?

The BMW 3 Series M340i immediately stands out thanks to its 18-inch alloy wheels with blue painted brake callipers. The saloon has a body-coloured M rear spoiler. Additional styling elements optimise cooling and aerodynamics. BMW Individual High-gloss Shadowline trim and Cerium Grey metallic finishes on the mirror caps and grille mesh provide an exclusive feel.

Inside are sports seats for the driver and front passenger. Upholstered in SensaTec and Alcantara with contrasting blue quilting. The sporty theme is continued with M pedals and Aluminium Tetragon Trim strips. M340i lettering also adorns the front door sill plates. Occupants can enjoy the perfect temperature thanks to three-zone climate control. It has separate controls for the driver, front passenger and rear passengers.

BMW 3 Series M340i front interior seats and footwell from passenger side

The driver can enhance performance using the Driving Experience Control function. This enables you to select your preferred mode from a choice of four. These include ECO PRO for greatest efficiency, SPORT and SPORT+ for optimal driving dynamics and COMFORT for the most cosseting ride. Engaging SPORT or SPORT+ mode delivers a richer exhaust sound for the ultimate thrilling experience.

Complementing the M340i’s exceptional standards of engineering is an impressive suite of technological features. Parking and manoeuvring are made safer and simpler thanks to Park Distance Control. It includes front and rear sensors, and navigation from the BMW Live Cockpit Plus system. With the Connected Package Plus you have access to real time traffic information, remote and concierge services and Apple CarPlay integration.

BMW 3 Series M340i infotainment screen displaying Apple CarPlay

Whether you’re looking to finance a BMW 3 Series M340i or purchase one, we have a wide range of second-hand BMW 3 Series M340is available to buy online safely with with Click & Collect and home delivery options available.

Search our stock of used BMW 3 Series M340i cars for sale.

Why buy from Arnold Clark?

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Representative example
Monthly Payment £691.42
Deposit £249
Term (Months) 60
Cash Price £32498
Credit Amount £32249
Completion Fee £1
Total Amount Payable £41,735
Fixed Interest Rate 5.7%
Representative APR 10.9%
Arnold Clark Automobiles Limited is authorised and regulated by the Financial Conduct Authority (308092) for general insurance and consumer credit purposes. We act as a credit broker sourcing credit to assist with your purchase from a carefully selected panel of lenders. Lenders will pay us a fee for these introductions (click here for details including our panel of lenders and disclosure statement). Offers subject to status, terms and conditions.
* MPG figures are obtained in laboratory testing and intended for comparisons between vehicles. Please be aware they’re not intended to represent real world efficiency.