BMW M340i: Power, Style, and Everyday Comfort
BMW continues to refine its lineup of sporty sedans, and the 2025 M340i proves that the German automaker knows exactly what enthusiasts want. This performance-oriented version of the 3 Series delivers exhilarating speed, sharp handling, and everyday comfort in a beautifully crafted package. While it doesn’t wear the full “M3” badge, the M340i more than earns its place as a true driver’s car with practicality in mind.
Let’s break down everything the 2025 BMW M340i offers—from performance and handling to design, tech, and value.
Engine and Performance: Six-Cylinder Symphony
At the heart of the 2025 BMW M340i lies a 3.0-liter turbocharged inline-six engine, codenamed B58, and it remains the star of the show. BMW rates it at 382 horsepower and 369 lb-ft of torque, but real-world dyno tests often suggest the engine delivers more than advertised.
The powertrain pairs with a smooth and snappy 8-speed ZF automatic transmission. Drivers can expect rapid shifts and smart gear changes whether they’re cruising on the highway or attacking back roads. BMW offers the M340i in both rear-wheel drive (RWD) and xDrive all-wheel drive (AWD) configurations. The AWD model, especially, delivers impressive traction and quicker launches, clocking 0–60 mph in just 4.1 seconds.
In typical BMW fashion, the M340i offers driving modes that transform its personality. Comfort mode keeps the ride composed and smooth for city driving, while Sport and Sport+ modes unleash the engine’s full potential. The exhaust note gets louder, the throttle becomes sharper, and the suspension firms up for spirited driving.
Handling and Ride Quality: Balanced and Confident
BMW engineers dialed in the M340i’s chassis with surgical precision. It rides on adaptive M suspension, which strikes an ideal balance between comfort and athleticism. Whether you’re gliding over uneven city streets or carving up a twisty mountain road, the M340i remains composed and connected.
Steering in the 2025 M340i feels tight and direct. BMW continues to use variable sport steering, and while some purists may miss the mechanical feel of older models, the system still provides plenty of feedback and accuracy. The car responds to inputs immediately, and the overall chassis balance inspires confidence.
xDrive models corner flat and put down power effortlessly, especially in slippery conditions. BMW also equips the M340i with an M Sport rear differential that actively distributes torque to enhance cornering grip.
Design and Exterior: Aggression Meets Elegance
Visually, the 2025 M340i sets itself apart from regular 3 Series models with subtle aggression. BMW updated the front fascia with slimmer, more angular headlights and reshaped air intakes for better aerodynamics. The kidney grilles—while still prominent—look more refined compared to past years.
You get M-specific elements like:
- Gloss black mirror caps
- Shadowline exterior trim
- A rear lip spoiler
- Larger M Sport brakes with optional red or blue calipers
- Unique 18 or 19-inch alloy wheel options
BMW also added new paint choices for 2025, including Tanzanite Blue II Metallic and Frozen Pure Grey for buyers seeking more exclusivity. Overall, the M340i carries a mature and muscular presence, never screaming for attention but always earning it.
Interior and Comfort: Premium With a Driver’s Focus
Slide into the cabin, and the 2025 M340i immediately impresses. The layout prioritizes the driver without sacrificing luxury. BMW wraps the cabin in premium materials—leather upholstery, aluminum or wood trim, and soft-touch plastics. The M steering wheel feels just right, thick and tactile, and comes with paddle shifters that provide satisfying feedback.
The big update for 2025? BMW’s new Curved Display—a massive 14.9-inch infotainment screen that flows seamlessly into the 12.3-inch digital instrument cluster. It looks futuristic and feels intuitive after a short learning curve. The interface runs the latest iDrive 8.5 system, which supports wireless Apple CarPlay and Android Auto, plus voice commands and cloud-based navigation.
The front sport seats offer excellent support during spirited drives, while still providing comfort for long road trips. Rear passengers get ample legroom and headroom for a compact luxury sedan, and the trunk holds a generous 17 cubic feet of cargo.
Technology and Features: High-Tech, High-Class
BMW packed the M340i with a suite of cutting-edge features:
- iDrive 8.5: Fast, intelligent, and customizable
- Harman Kardon Surround Sound: A standard 16-speaker system that delivers studio-level audio
- Wireless charging and multiple USB-C ports
- Gesture control for certain infotainment functions
- Augmented reality navigation in select trims
Driver assistance features include:
- Adaptive cruise control
- Lane-keeping assist
- Traffic jam assist
- Automatic emergency braking
- Blind-spot monitoring
- 360-degree parking camera with automated parking assist
BMW’s tech feels thoughtful and helpful without overstepping. The driver always stays in control.
Fuel Economy: Efficient for the Power It Packs
Despite its high performance, the 2025 M340i remains relatively fuel-efficient. BMW estimates:
- RWD model: 23 mpg city / 32 mpg highway
- xDrive model: 23 mpg city / 31 mpg highway
The mild-hybrid system (a 48V starter-generator) supports smoother engine starts and boosts efficiency. It also provides a small torque assist during acceleration, which helps the M340i deliver strong performance without guzzling fuel.
Pricing and Value: A Performance Bargain?
BMW starts pricing the 2025 M340i at $59,800 for the RWD version, with the xDrive variant starting at $61,900. Optional packages—like the Premium, Executive, or Driving Assistance Professional Package—can push the final price closer to $70,000.
However, compared to the more expensive M3 or rivals like the Audi S4 and Mercedes-AMG C43, the M340i offers tremendous value. You get near-M3 performance with better ride comfort, more refinement, and lower insurance and maintenance costs.
Verdict: The Sweet Spot in BMW’s Lineup
The 2025 BMW M340i continues to dominate the “luxury sport sedan” category by getting the basics right. BMW didn’t overcomplicate the formula. They took an excellent engine, wrapped it in a stylish and well-built package, and infused it with the latest tech.
This car doesn’t try to be something it’s not. It knows its role: a daily drivable, highly engaging, beautifully engineered machine. It doesn’t scream for attention—it earns it every time the engine roars to life or the chassis hugs a curve.
If you’re shopping for a luxury sedan that delivers driving thrills without sacrificing comfort and technology, the 2025 BMW M340i deserves a spot at the top of your list.
