BMW 420d M Sport 2017: Ultimate Driver’s Coupe Review

The 2017 BMW 420d M Sport stands out as a refined evolution of the 4 Series lineup, delivering a compelling mix of sporty performance, fuel efficiency, and everyday usability. This facelifted model refines its predecessor’s strengths with subtle updates to lighting, suspension, and interior accents, making it a top contender against the Mercedes C-Class Coupe and Audi A5. Powered by a 2.0-litre turbo diesel engine producing 190hp and 400Nm of torque, it accelerates from 0-62mph in 7.3 seconds with the manual gearbox, while claiming impressive economy figures.

Striking Design and Premium Presence

Externally, the 420d M Sport captivates with its athletic proportions and bold styling cues. The long hood, raked roofline, and wide stance create an aggressive silhouette enhanced by the M Sport package’s aerodynamic body kit, larger kidney grilles, and 19-inch alloy wheels. New LED headlights with sharper lines and larger tailpipes add a modern touch to the facelift. Available in eye-catching colors like Snapper Rocks Blue, it turns heads while maintaining BMW’s signature elegance.

Inside, the cabin exemplifies German engineering precision. High-quality materials, including new aluminium carbon-effect trims, combine with ergonomic layouts for a luxurious feel. The three-spoke M Sport steering wheel offers a clean design with minimal buttons, and bolstered sports seats provide excellent support for spirited driving. A digital instrument cluster adapts to drive modes, enhancing immersion, while the iDrive infotainment system—with its intuitive rotary controller, Apple CarPlay support, and streaming integration—sets a benchmark for usability.

Engine Performance and Transmission Options

At the heart lies the 2.0-litre four-cylinder turbo diesel, tuned for 190hp (sometimes listed as 188bhp) and a substantial 400Nm of torque. This setup ensures effortless overtaking and strong mid-range pull, ideal for motorways and B-roads. Paired with a six-speed manual, it hits 0-62mph in 7.3 seconds and a limited top speed of 155mph (or 240km/h equivalent). The manual adds engagement for enthusiasts, though most opt for the eight-speed automatic, which shaves the sprint to 7.1 seconds and boosts efficiency.

Refinement is a highlight: the engine is quieter than rivals’ older diesels, with smooth power delivery making it a relaxed cruiser.

Dynamic Handling and Chassis Refinements

BMW’s chassis tweaks—including thicker anti-roll bars, revised dampers, adjusted wheel camber, and a wider track—enhance stability without sacrificing ride quality. The coupe’s lower center of gravity and wider track versus the 3 Series amplify agility, making it class-leading for driver involvement. In Sport mode, steering gains weight for precise cornering, with high grip levels and minimal body roll through bends.

While electric steering lacks some traditional feedback, its quick ratio ensures accuracy. Adaptive dampers (optional) balance sportiness and comfort seamlessly—firm yet composed over bumps, outshining the Audi A5 in engagement but trailing the Mercedes C-Class slightly in plushness. Road noise is well-contained, even on larger wheels.

• Cornering prowess: Eager front end dives into apexes with confidence.
• High-speed stability: Unfazed by crosswinds or undulations.
• Braking: Strong and progressive, with good modulation.

Comfort, Practicality, and Daily Usability

Despite its sporty ethos, the 420d excels as a grand tourer. The low driving position, well-weighted controls, and supportive seats make long journeys fatigue-free. Rear space accommodates adults surprisingly well for a coupe, with ample legroom though headroom suffers from the sloping roofline. Boot capacity hits 445 litres, sufficient for weekend luggage.

NVH levels are low, with effective insulation from wind and tire noise. The automatic’s smooth shifts ease urban traffic, and efficiency shines on commutes—real-world figures approach claims for extended range.

Technology and Safety Features

The 2017 facelift brings advanced tech: iDrive with touchscreen elements, navigation, and connectivity. Optional driver aids include adaptive cruise, lane-keeping, and parking sensors. M Sport models feature enhanced displays and ambient lighting. Safety is robust, with strong crash ratings inferred from BMW standards, though specific 2017 data aligns with segment norms.

Rivals Comparison

Versus peers:

• Audi A5: Smoother ride but less engaging dynamics.
• Mercedes C-Class Coupe: Plusher comfort, quieter diesel, but trails in agility.
• Infiniti Q60: Powerful but less refined economy.

The BMW prioritizes fun, winning for enthusiasts.

Pricing and Ownership

Starting around £35,000 for M Sport (2017 pricing), it’s premium but justified by residuals and efficiency. Running costs benefit from diesel economy and BMW’s service network. Warranty is standard three years/unlimited mileage.

Pros and Cons

• Pros: Exceptional handling, efficient diesel, premium interior, versatile performance.
• Cons: Steering feedback could improve, automatic preferred over manual for most, firm ride on big wheels.

Frequently Asked Questions (FAQs)

Is the 2017 BMW 420d M Sport reliable?

BMW 4 Series scores well in reliability surveys, with the 2.0 diesel proving durable if serviced properly.

Manual or automatic—which is better?

Automatic for ease and better mpg; manual for purists seeking involvement.

How does it compare to the 3 Series?

Coupe’s stiffer setup and wider track make it sportier.

What’s the real-world fuel economy?

Expect 50-60mpg mixed driving, higher on motorways.

Is xDrive available?

Yes, adding all-wheel drive for better traction, slightly slower acceleration.

Final Verdict

The 2017 BMW 420d M Sport refines an already stellar formula, offering unmatched driver joy, efficiency, and luxury. It’s the coupe for those prioritizing engagement without compromise. Ideal for enthusiasts clocking high miles.