Choose the BMW 330Li M Sport (3 Series LWB) if rear-seat space, easier access and chauffeur-friendly comfort matter most. Choose the BMW M340i xDrive if acceleration, six-cylinder character, all-wheel drive and M-specific chassis hardware are the priority. In BMW India’s published figures, the M340i reaches 100 km/h 1.8 seconds sooner, while the LWB provides the documented long-wheelbase rear-cabin advantage.
This comparison is for the India-market cars identified in BMW Group India releases: the 330Li M Sport launched on 28 February 2025 and the M340i xDrive launched on 14 November 2024. Equipment, prices and even model names can differ in other countries or production years.
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BMW 3 Series LWB vs M340i: the short answer
These are not two power levels of exactly the same buyer proposition. The 330Li M Sport is the India-specific long-wheelbase 3 Series, engineered around additional rear accommodation. The M340i xDrive is the performance-oriented 3 Series derivative, with a 374 hp straight-six, all-wheel drive and a dedicated M Sport differential, suspension and brake package.
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|---|---|---|
| Frequent chauffeured use or adult rear passengers | BMW 330Li M Sport | BMW quotes a 2,961 mm wheelbase, longer body and improved rear entry, legroom and headroom. |
| Fast highway driving and rapid overtaking | BMW M340i xDrive | 374 hp, 500 Nm and a BMW-quoted 0–100 km/h time of 4.4 seconds. |
| Maximum traction in varied conditions | BMW M340i xDrive | xDrive all-wheel drive is standard on the India-market M340i. |
| Lower launch-era purchase price | BMW 330Li M Sport | The cited launch price was ₹12.30 lakh below the M340i’s dated launch price, before taxes and other charges. |
The decisive question is how often someone sits in the back versus how often you will exploit the M340i’s extra performance. A buyer who mostly drives alone but occasionally carries passengers may accept the standard-length performance car; a buyer who is regularly driven should inspect the LWB rear seat before deciding on engine output.
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Exactly which BMWs are being compared?
BMW 330Li M Sport: the 3 Series Long Wheelbase
BMW Group India’s 28 February 2025 release calls this car the new BMW 3 Series Long Wheelbase and identifies the variant as the 330Li M Sport. It uses a 2.0-litre four-cylinder petrol engine, an eight-speed Steptronic Sport automatic transmission and selectable ECO PRO, Comfort and Sport modes. BMW lists a 4,819 mm overall length and a 2,961 mm wheelbase.
BMW M340i xDrive
BMW Group India’s 14 November 2024 release identifies the performance model as the BMW M340i xDrive. It uses a 2,998 cc straight-six petrol engine, an eight-speed Steptronic Sport automatic transmission and xDrive all-wheel drive. The release specifies an M Sport differential, M Sport suspension, M Sport brakes and sport seats. The cited release does not provide an M340i wheelbase figure, so no direct wheelbase comparison should be inferred.
“BMW 3 Series LWB” is therefore not a complete specification by itself. Confirm the exact trim, model year, drivetrain and equipment on the vehicle quotation, particularly if the car is imported, pre-owned or from a different market.
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The figures below are BMW-published India-market specifications, not results from an independent back-to-back road test.
| Specification | BMW 330Li M Sport (3 Series LWB) | BMW M340i xDrive |
|---|---|---|
| India launch release | 28 February 2025 | 14 November 2024 |
| Engine | 2.0-litre four-cylinder petrol | 2,998 cc straight-six petrol |
| Maximum power | 258 hp | 374 hp |
| Maximum torque | 400 Nm at 1,550–4,400 rpm | 500 Nm |
| 0–100 km/h | 6.2 seconds | 4.4 seconds |
| Transmission | Eight-speed Steptronic Sport automatic | Eight-speed Steptronic Sport automatic |
| Drive system | Not specified as all-wheel drive in the cited LWB material | xDrive all-wheel drive |
| Length | 4,819 mm | Not stated in the cited release |
| Wheelbase | 2,961 mm | Not stated in the cited release |
| Boot capacity | Not stated in the cited material | 480 litres |
| Dated India ex-showroom launch price | ₹62,60,000 (February 2025 release) | ₹74,90,000 (November 2024 release) |
The M340i’s published output is 116 hp higher and 100 Nm greater than the 330Li’s. Its quoted 0–100 km/h advantage is 1.8 seconds. Those are meaningful specification differences, but they do not by themselves establish ride quality, braking distances, cornering ability, fuel consumption or comfort on Indian roads.
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Rear-seat space and passenger comfort
The LWB’s clearest documented advantage is the second row. BMW says the 2,961 mm wheelbase and 4,819 mm length enable easier rear entry and provide more rear legroom and headroom. The company’s current 3 Series Long Wheelbase model page also presents rear-seat access and passenger comfort as core reasons for the longer body.
Why the extra wheelbase matters
- Entry: A longer rear-door opening area and additional distance between the axles can make stepping into the back easier, especially for older passengers.
- Legroom: BMW specifically highlights additional rear legroom. Check the front-seat position you actually use, because usable space depends on how far the front seats are set back.
- Headroom: BMW also describes improved rear headroom. Sit in the seat with the roof, seat cushion and your preferred posture rather than relying only on a brochure dimension.
- Chauffeur use: The LWB’s design is better aligned with an owner who spends substantial time in the second row.
The M340i release emphasizes sport seats and performance hardware rather than a stretched passenger compartment. It may still carry adults comfortably, but the supplied BMW material does not establish a comparable rear-space measurement. Do not assume the two cars offer identical rear accommodation.
What to inspect during a showroom visit
- Set the driver’s seat to your normal driving position, then sit behind it in both cars.
- Check knee clearance, foot space under the front seat and the ability to enter without twisting.
- Test the center-rear position with two adults seated outboard; inspect shoulder room and the transmission tunnel.
- Try the rear seat with the front passenger seat moved to the position a tall passenger would use.
- Measure the luggage space if you regularly carry child seats, airport cases or business equipment. BMW gives a 480-litre boot figure for the M340i; no comparable LWB boot figure is established in the cited material.
Performance: where the M340i pulls away
Engine output and acceleration
The 330Li’s 258 hp and 400 Nm are substantial for everyday use. BMW quotes 6.2 seconds from 0 to 100 km/h. The M340i’s 374 hp and 500 Nm, combined with xDrive traction, produce a quoted 4.4-second 0–100 km/h time. The difference is 1.8 seconds in BMW’s specifications.
That gap affects more than launch figures. The M340i has a larger straight-six engine and a 100 Nm torque advantage, giving it a greater performance reserve for overtaking and high-speed acceleration. The LWB’s four-cylinder engine should be judged as a smooth, quick executive-car powertrain rather than as a direct substitute for the M340i’s performance brief.
What the numbers do not tell you
- BMW’s times are manufacturer-published figures under its stated test conditions.
- No independent head-to-head test was supplied to verify the 1.8-second difference in identical weather, fuel, tyres and surface conditions.
- Acceleration feel can change with tyre condition, passenger load, altitude, fuel and software calibration.
- A test drive is necessary to assess throttle response, transmission behaviour, engine sound and ride compliance.
BMW’s November 2024 release also says that more than 1,000 M340i units had been sold in India. That is a BMW-reported sales figure, not an independently audited market total. The same release quotes BMW India president and CEO Vikram Pawah describing the M340i as the highest-selling performance car in India for more than three years; that statement should be understood as the executive’s claim, not an external market ranking.
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Drivetrain and chassis hardware
M340i xDrive equipment
The M340i’s standard xDrive all-wheel drive is paired with an M Sport differential, M Sport suspension and M Sport brakes. Together, those components are intended to support the car’s performance role by managing traction, torque distribution, body control and repeated braking. The release also lists sport seats.
330Li M Sport equipment
The LWB material focuses on comfort and convenience equipment, including comfort seats, Parking Assistant Plus, Surround View and Reversing Assistant. Its launch release lists ECO PRO, Comfort and Sport driving modes. These features suit urban maneuvering and passenger-focused use, particularly where a long sedan is frequently parked or driven in crowded areas.
The equipment philosophies differ: the LWB prioritizes access, comfort and parking assistance, while the M340i adds hardware aimed at enthusiastic driving. Feature availability can change with production date and specification. BMW’s model page warns that website configurations may differ from vehicles supplied in India, so obtain the build sheet for the specific car.
Optional M Performance accessories
BMW’s M340i release names optional M Performance accessories such as a carbon-fibre rear spoiler and an ornamental kidney grille. Availability is dealer-dependent. Before paying for an accessory, confirm its exact fitment for the model year, trim and market, and ask whether installation affects warranty coverage or insurance declaration.
Price, taxes and the real purchase decision
The cited launch releases list ₹62,60,000 ex-showroom for the 330Li M Sport in February 2025 and ₹74,90,000 ex-showroom for the M340i xDrive in November 2024. The arithmetic difference is ₹12,30,000, with the M340i’s launch figure about 19.6% higher than the LWB’s launch figure.
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These are dated reference points, not current quotations. BMW states that the price prevailing at invoicing applies and that ex-showroom prices exclude road tax, insurance and applicable statutory or local charges. Registration costs, insurance premiums, optional accessories, financing and dealer-installed items can materially change the on-road total.
Get a like-for-like quotation
- Request the vehicle identification or exact model-year specification for each car.
- Ask for ex-showroom, registration, insurance, handling or logistics charges and accessories as separate lines.
- Confirm whether the quoted car is physically in stock, in transit or a factory order.
- Ask for the delivery date and the price-validity period in writing.
- Compare finance interest, down payment, balloon payment and total repayment separately from the vehicle price.
- Obtain the current service-plan and warranty prices for the exact VIN or configuration.
Ownership planning: service, warranty and fuel claims
Service packages
BMW says the 330Li M Sport is offered with Service Inclusive and Service Inclusive Plus choices, with plan durations and mileage limits described in its launch material. The supplied information does not establish the current price, exclusions or eligibility for every vehicle. Ask the dealer to state the included operations, time period, mileage ceiling, transferability and renewal terms on the order form.
Do not assume the M340i has identical service-plan pricing simply because both cars carry the 3 Series name. Its six-cylinder engine, xDrive system and M hardware can affect consumables and maintenance requirements. Request a separate written schedule for the M340i.
Fuel economy
A BMW India specification sheet dated January 2023 lists 13.02 km/L under controlled test conditions. That figure is for the specified model and test method; it is not a current, real-world, comparative economy result for the 2025 330Li and 2024 M340i. Traffic, driving style, fuel quality, tyre pressures, temperature and passenger load will change consumption. Use a dealer’s current certified figure for the exact car and treat everyday economy as an ownership variable rather than a reason to declare one winner from this comparison.
Warranty and availability checks
- Confirm the warranty start date for demonstrators or pre-registered stock.
- Ask which tyres, brake components and accessories are covered and where exclusions apply.
- Check whether an optional accessory is installed by BMW or an outside supplier.
- Verify parts and service availability in your city before selecting a performance-specific configuration.
Which car suits common Indian use cases?
Mostly chauffeured urban travel
Choose the 330Li M Sport. The documented longer wheelbase, rear-entry emphasis and comfort-seat specification directly address the passenger experience. Parking Assistant Plus, Surround View and Reversing Assistant can also be valuable when maneuvering a long sedan in tight urban spaces.
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Owner-driven commuting with occasional passengers
Either car can work, so drive both. If the rear seat is used only occasionally, the M340i’s 4.4-second quoted acceleration and six-cylinder engine may justify its premium. If family members regularly sit behind you, the LWB’s additional room may be noticed every day while the M340i’s extra performance may be used only occasionally.
Weekend drives and high-speed touring
The M340i is the logical starting point because its xDrive system, M Sport differential, suspension and brakes are included in the published specification. Confirm ride comfort on the roads you actually use; the supplied material does not provide an independent ride or handling assessment.
Mixed family and performance use
Make a two-part test drive: spend time in the rear seat with the driver’s seat fixed to your normal position, then drive the same route alone. Score each car for access, seat comfort, low-speed ride, visibility, overtaking response and parking. This prevents the faster car from winning by acceleration alone when your passengers are the people who use the vehicle most.
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A practical decision matrix
| Question | If your answer is yes… | Lean toward |
|---|---|---|
| Will an adult use the rear seat on most trips? | Rear accommodation is a daily requirement. | 330Li M Sport |
| Do you specifically want a straight-six engine? | Engine character is central to the purchase. | M340i xDrive |
| Do you need all-wheel drive? | Confirm that requirement for your routes and conditions. | M340i xDrive |
| Are parking cameras and automated assistance more valuable than track-oriented hardware? | Convenience is the priority. | 330Li M Sport |
| Is the launch-era price gap outside your budget? | Start with a current on-road quotation, not the old release price. | Likely 330Li, subject to today’s quote |
| Will you modify the car? | Check accessory fitment, warranty and insurance first. | Either, after dealer confirmation |
Questions to ask before signing
- Which exact model year and production month is this vehicle?
- Is the quoted price valid at invoicing, and what charges are excluded?
- What are the current waiting time, stock status and delivery commitments?
- Which rear-seat and parking features are fitted to this VIN?
- What are the current Service Inclusive and Service Inclusive Plus terms and prices?
- For the M340i, are xDrive, M Sport differential, suspension and brakes standard on this exact car?
- What tyres and wheel sizes are fitted, and what is the replacement cost?
- Are any M Performance accessories factory-fitted, dealer-fitted or unavailable?
- Can I test both cars with the driver’s seat set to my normal position and with an adult passenger in the rear?
Bottom line: space or speed?
The BMW 330Li M Sport is the rational choice when the rear cabin is a primary workplace or passenger lounge. BMW’s 2,961 mm wheelbase, 4,819 mm length and stated rear-entry, legroom and headroom benefits give it a clear use-case advantage.
The BMW M340i xDrive is the enthusiast’s choice. Its 374 hp straight-six, 500 Nm, quoted 4.4-second 0–100 km/h time and M-specific drivetrain and chassis hardware deliver the stronger performance proposition. The dated launch price was higher, and its suitability should be judged with a current quote and a real test drive.
Neither car is universally better. Select the LWB when passengers experience the car more often than you exploit its engine; select the M340i when you are the primary occupant and performance is the reason you are buying a 3 Series.
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