The BMW 3 Series and 4 Series are two of the most sought-after models in the German automaker’s lineup, each representing a unique balance of performance, luxury, and style. While they share many similarities, especially in their underlying platform and engines, distinct differences make them appeal to different kinds of buyers. In this detailed comparison, we’ll delve into various aspects of the BMW 3 Series vs 4 Series, including design, performance, interior features, technology, and pricing, to help you decide which one might better fit you.
Table of Contents
Overview of the BMW 3 Series
The BMW 3 Series has been a stalwart of the BMW lineup since its debut in 1975. It is often regarded as the benchmark for compact executive saloons. The 3 Series has become synonymous with driving pleasure, precision engineering, and a refined balance of performance and comfort. It is available as a saloon and estate (Touring) model, offering practicality and dynamic handling.
Key Features
- Body Styles: Saloon, Estate (Touring)
- Engine Options: Petrol, diesel, and plug-in hybrid
- Transmission: Automatic and manual (in select markets)
- Drive Type: Rear-wheel drive or xDrive (BMW’s all-wheel-drive system)
- Price Range (2024): £38,000 – £55,000+
The current generation, the G20, introduced in 2019, brings even more advanced technology and improved driving dynamics, making it one of the most versatile vehicles in its segment.
Overview of the BMW 4 Series
The BMW 4 Series, introduced in 2013, was created to provide a sportier, more exclusive alternative to the 3 Series. The 4 Series includes a two-door coupe, a convertible, and a four-door Gran Coupe, combining sleek styling with athletic performance. The Gran Coupe version, in particular, blurs the lines between the coupe and the saloon, offering added practicality without compromising aesthetics.
Key Features
- Body Styles: Coupe, Convertible, Gran Coupe
- Engine Options: Petrol, diesel, and plug-in hybrid
- Transmission: Automatic (manual available in select performance trims)
- Drive Type: Rear-wheel drive or xDrive
- Price Range (2024): £42,000 – £60,000+
The latest generation, the G22, unveiled in 2020, is notable for its bold styling, particularly the large kidney grilles, and refined driving dynamics prioritising agility and performance.
Design and Styling
The BMW 3 Series and 4 Series are both stylish and sporty sedans, but they have distinct design cues that set them apart.
BMW 3 Series: Elegance Meets Practicality
The BMW 3 Series has long been considered a practical yet premium vehicle. The current G20 generation maintains a modern, sleek design but errs on understated elegance. The proportions are well-balanced, with sharp lines, a prominent kidney grille, and signature BMW LED headlights. The Touring version adds further practicality, offering increased boot space for families or those needing extra room regularly.
BMW 4 Series: Bold and Sporty
In contrast, the 4 Series is designed to turn heads. The front end is dominated by an enlarged kidney grille, which has been a point of discussion among enthusiasts. While controversial, it undeniably gives the 4 Series a unique identity. The coupe silhouette, whether in two-door or Gran Coupe form, is low and wide, emphasising its sporty intentions. The convertible variant, with its soft-top roof, adds a touch of glamour and is perfect for drivers seeking a more open-air experience.
Which One is Better?
If you’re after a vehicle that offers sleek sophistication without drawing too much attention, the 3 Series fits the bill. However, the 4 Series coupe or Gran Coupe may be for you if you want a sportier, more aggressive look.
Performance and Handling
The BMW 3 Series and 4 Series share many of the same engines and platforms, ensuring similar driving experiences. However, subtle chassis tuning and body style differences lead to unique driving characteristics.
BMW 3 Series Performance
The 3 Series has a wide range of engines, from the efficient 318i (2.0-litre turbocharged petrol engine) to the exhilarating M340i, which boasts a 3.0-litre inline-six engine with 374 horsepower. The plug-in hybrid 330e is trendy for those looking to reduce their carbon footprint while still enjoying BMW’s signature driving dynamics.
The 3 Series’ handling is sharp and responsive, with well-weighted steering and an adaptable suspension system. The rear-wheel-drive layout makes for an engaging driving experience, while the optional xDrive provides added grip in challenging conditions. The 3 Series strikes a delicate balance between comfort and performance, making it ideal for daily commuting and spirited drives on country roads.
BMW 4 Series Performance
The 4 Series shares the same engine lineup as the 3 Series, with 420i, 430i, and the powerful M440i xDrive models. The M440i, in particular, offers thrilling acceleration with its 3.0-litre inline-six engine and 374 horsepower, propelling the coupe from 0 to 60 mph in just under 4.5 seconds.
In terms of handling, the 4 Series feels sportier, thanks to its lower centre of gravity and slightly stiffer suspension tuning. The coupe and Gran Coupe versions are designed for more dynamic driving, with sharper responses and a greater focus on cornering prowess. That said, the 4 Series is still comfortable enough for everyday driving, though the ride can feel a bit firmer compared to the 3 Series, especially on models equipped with larger wheels and M Sport suspension.
Which One is Better?
If you prioritise comfort and versatility with a touch of dynamic performance, the 3 Series is an excellent choice. However, if you seek a more engaging, performance-oriented drive, particularly in a two-door or Gran Coupe format, the 4 Series might be more up your street.
Interior and Comfort
The BMW 3 Series and 4 Series both offer luxurious and comfortable interiors, with high-quality materials and ample space for passengers. However, there are some differences in their interior design and features.
BMW 3 Series Interior
Inside the 3 Series, you’ll find a minimalist yet luxurious cabin. High-quality materials, such as soft-touch plastics, aluminium trims, and leather upholstery, create a premium atmosphere. The dashboard is cleanly laid out with BMW’s iDrive system and a 10.25-inch infotainment screen taking centre stage. A 12.3-inch digital instrument cluster is available, adding to the modern, tech-savvy feel.
The 3 Series saloon offers generous legroom in the rear, and the boot space is competitive for its class, offering around 480 litres of capacity in the saloon and up to 500 litres in the Touring version. The estate is exceptionally versatile, with flat rear seats allowing for larger loads.
BMW 4 Series Interior
The 4 Series shares much of its interior design and technology with the 3 Series, making the materials, layout, and technology familiar. The iDrive system is just as intuitive, and the high-quality materials carry over. The significant difference lies in the seating position and the overall sense of space. In the 4 Series coupe and convertible, the sloping roofline means rear passenger space is more limited than the 3 Series, and the boot is more minor, particularly in the convertible.
However, the Gran Coupe version of the 4 Series offers a more practical alternative. It has four doors and a larger boot, making it more suitable for families or those who need a bit more space without sacrificing the sporty design.
Which One is Better?
For sheer practicality and comfort, especially for rear passengers, the 3 Series is the better option. The 4 Series is more driver-focused, particularly in coupe and convertible form. While it sacrifices some rear-seat space and boot capacity, it offers a more exclusive, sporty cabin experience.
Technology and Features
Both the 3 Series and 4 Series are packed with advanced technology, including BMW’s latest iDrive system, driver assistance features, and a wide array of customisation options.
BMW iDrive and Infotainment
Both cars come with BMW’s latest iDrive 7 system, which is one of the most intuitive infotainment systems on the market. It includes navigation, Apple CarPlay, Android Auto, and voice controls. The system is controlled via a rotary dial, touchscreen, or voice commands, offering great flexibility.
The higher trims of both models come with features like adaptive cruise control, lane-keeping assist, parking sensors, a head-up display, and more. The 3 Series and 4 Series can also have a Harman Kardon premium sound system for a superior audio experience.
Which One is Better?
There’s very little to distinguish between the two in terms of technology. The 3 Series and 4 Series offer the same suite of tech features, meaning your decision will likely be influenced more by the style and driving dynamics than the gadgets.
Fuel Efficiency and Running Costs
Both the BMW 3 Series and 4 Series are available with a range of engine options, which can affect their fuel efficiency and running costs.
BMW 3 Series Fuel Efficiency
The 3 Series offers a range of efficient engines, particularly in the diesel and plug-in hybrid variants. The 320d, for instance, can achieve up to 55 mpg, making it an excellent choice for long-distance commuters. The 330e plug-in hybrid offers around 36 miles of pure electric range, significantly reducing fuel consumption for short trips.
BMW 4 Series Fuel Efficiency
The 4 Series offers similar efficiency figures, particularly in the Gran Coupe and diesel models. However, the sportier models, such as the M440i, tend to use more fuel due to their performance-oriented nature, with the M440i averaging around 32 mpg.
Which One is Better?
If running costs are a top priority, the 3 Series has the edge, especially in diesel and plug-in hybrid variants. The 4 Series, while still efficient, leans more towards performance, particularly in the higher trims.
Pricing and Value for Money
Both the BMW 3 Series and 4 Series are premium luxury sedans, so they come with a premium price tag. However, they offer excellent value for money in terms of their quality, performance, and features
BMW 3 Series Pricing
The BMW 3 Series starts at around £38,000 for the entry-level 318i model, with prices increasing depending on engine choice and optional features. The plug-in hybrid 330e is priced at around £43,000, and the high-performance M340i xDrive can push well past £50,000.
BMW 4 Series Pricing
The 4 Series has a slightly higher starting price, with the 420i coupe beginning around £42,000. The Gran Coupe models are priced similarly to the saloon, while the high-performance M440i xDrive reaches up to £60,000.
Which One is Better?
In terms of value, the 3 Series offers more bang for your buck, particularly for those prioritising practicality. The 4 Series, while more expensive, justifies the higher cost with its sportier design and more exclusive appeal.
Conclusion: Which One Should You Choose?
The decision between the BMW 3 Series and 4 Series ultimately comes down to your priorities. If you need a practical, well-rounded car that offers comfort, efficiency, and engaging driving dynamics, the 3 Series is an excellent choice. It’s more versatile, particularly in Touring form, and provides a slightly smoother ride for daily driving.
However, if you prioritise style, exclusivity, and a more driver-focused experience, the 4 Series may be worth the extra investment, particularly the coupe or Gran Coupe. Its sportier design and lower centre of gravity make driving more thrilling, especially if you choose a performance-oriented model like the M440i.
Ultimately, the 3 Series and 4 Series represent the pinnacle of BMW’s engineering prowess, and whichever you choose, you’re guaranteed a car that delivers a premium driving experience.