BMW 3 Series or M3: which fits Arlington drivers?

The BMW 3 Series fits the Arlington driver whose week is commuting and errands, and the BMW M3 fits the driver who wants BMW M performance first. BMW of Arlington, an authorized BMW M Certified Dealer on East Lamar Boulevard, carries both. BMW of Arlington holds 4.5 stars across 5,810 Google reviews (Google, 2026).

Keep reading below, then schedule a test drive in Arlington. Bringing your own numbers to the lot settles this faster than any spec sheet.

The BMW 3 Series suits daily Arlington driving; the M3 suits performance buyers

For daily driving in Arlington, the 3 Series is the better fit. BMW’s published 2026 model year figures put the 330i Sedan at $48,000 with 255 hp, while the M3 Sedan starts at $79,300 with 473 hp.

The 3 Series line runs from the 330i Sedan up to the M340i xDrive Sedan at $64,300. The M3 line starts at $79,300 and tops out at $88,600 for the M3 Competition xDrive Sedan.

For the 2027 model year, BMW lists a new 3 Series line: the 330 starts at $49,900 and the 330 xDrive at $51,900, both with 255 hp, and the M350 xDrive makes 437 hp from $65,900 (BMW, 2026).

A driver with a week of commutes and errands gets the lower price, and every 3 Series sedan listed is a hybrid. A driver who wants BMW M performance first gets the M3, a gasoline model with a higher price to match.

What do the BMW 3 Series and M3 cost to start?

The 330i Sedan starts at $48,000, and the M3 Sedan starts at $79,300, according to BMW’s published 2026 model year figures. Each line has a step up: $50,000 for the 330i xDrive Sedan, and $83,500 for the M3 Competition Sedan.

The M340i Sedan, the 3 Series trim with 386 hp, starts at $62,300.

A buyer who wants more power than the 330i gives, but not M3 pricing, can start with the M340i in the same 3 Series lineup.

How do the EPA fuel economy ratings of the BMW 3 Series and M3 differ?

The 330i Sedan is EPA certified at 31 mpg combined, and the M3 Sedan is certified at 19 mpg combined. The four 3 Series sedans run from 29 to 31 mpg combined.

The M3 gasoline sedans all carry the same 16 mpg city and 23 mpg highway ratings, and their combined figures run from 18 to 19 mpg.

A driver who counts fuel costs first has the clearer case for the 3 Series. A driver who buys the M3 for its power should plan on 16 mpg in the city.

How much power do the BMW 3 Series and M3 make?

The M3 Sedan makes 473 hp, against 255 hp for the 330i Sedan, according to BMW’s published 2026 model year figures.

The top 3 Series, the M340i Sedan, makes 386 hp and 398 lb-ft of torque. The M3 Competition Sedan makes 503 hp and 479 lb-ft, and the M3 Competition xDrive Sedan makes 523 hp.

A driver who rarely needs the top end can choose the 330i and keep the lower price.

How much seating and cargo room do the BMW 3 Series and M3 have?

Both lines seat five in every trim BMW lists for the 2026 model year. Wheelbase is 112.2 inches on the 330i and M340i trims and 112.5 inches on every M3 trim.

Seating does not separate these two models. The choice turns on price, power and fuel economy.

Which figures set the BMW 3 Series and M3 apart?

The M3 Sedan starts at $79,300 and makes 473 hp, against $48,000 and 255 hp for the 330i Sedan, according to BMW’s published 2026 model year figures.

The M3 Competition xDrive Sedan is the all-wheel-drive version of the M3 Competition Sedan. The other M3 trims are rear-wheel drive.

When is the BMW 3 Series or M3 the wrong pick?

The M3 is the wrong pick for a driver whose budget stops near the 330i Sedan’s $48,000 starting price. The 3 Series is the wrong pick for a driver who needs 473 hp or more, and the M3 Sedan starts at that power.

Between the two lines, the M340i gives the 3 Series driver 386 hp, starting at $62,300.

For a driver who wants a manual shifter with M3 power, the base M3 Sedan is the trim to see. The EPA record lists it with a six-speed manual, while the Competition models carry an automatic.

Frequently asked questions

How do I reserve an incoming BMW or order a custom factory build at BMW of Arlington?

You can reserve an incoming vehicle from our inventory listing or place a custom factory order with us. An incoming vehicle is one that has not yet reached the lot.

What taxes and fees apply when buying a new BMW in Texas?

On a Texas purchase, the 6.25% motor vehicle sales tax applies to the sales price less any trade-in allowance (Texas Comptroller of Public Accounts, 2026). The base registration fee for a passenger vehicle or truck of 6,000 lbs or less is $50.75 (Texas Department of Motor Vehicles, 2025). The title application fee is $28 or $33, depending on the county (Texas Department of Motor Vehicles).

How do BMW leasing and financing work at BMW of Arlington?

Leases, new BMW financing and pre-owned car loans are all available here. Each one is a different way to pay for the same car, so compare them on the model you want.

How do I get a trade-in value before I visit BMW of Arlington?

Trade-in customers can visit with or without an appointment. Walk in or book ahead, whichever suits your week.

What warranty comes with a new BMW 3 Series and M3?

BMW’s published warranty for the 2026 model year 3 Series and M3 is the 4 year/50,000-mile BMW New Vehicle/SAV Limited Warranty. The same warranty applies to both models.

Where is BMW of Arlington, and how do I get there from Mansfield or Grand Prairie?

We are at 1105 E Lamar Blvd, Arlington, TX 76011. Sales is open Monday to Friday from 8:30 AM to 8:00 PM and Saturday from 9:00 AM to 6:00 PM; on Sunday it is closed.

What do customers say about buying a BMW at BMW of Arlington?

One September 2026 Google review describes a first BMW purchase in which Brent Collins answered every question. In that review, Joanna P. wrote: “Brent Collins assisted me in the purchase of my first BMW. Brent is FANTASTIC! He answered all my questions and continues to be responsive when I ask questions. He is pleasant, upbeat, positive, full of energy and helped me navigate through my purchase. Buying a car can be stressful, but Brent has a peace about him that just settles your soul. He is one of a kind, and I hope to purchase my next vehicle from him!” That is one customer’s visit.

Why shop a BMW 3 Series or M3 at BMW of Arlington?

BMW of Arlington carries both models at 1105 E Lamar Blvd, Arlington, TX 76011, so a buyer can weigh a 3 Series against an M3 in one place. Of the 5,810 Google reviews behind that 4.5-star rating, 83 in 100 are five-star (Google, 2026).

An online form lets you request parts and ask for prices with no obligation. It is a request form, not an online checkout. We can order parts for other brands as well as BMW.

In a July 2026 Google review, Rebecca Y. wrote: “I’ve bought BMW cars for many years across multiple dealerships in Texas but BMW of Arlington is the best and my favorite experience when it comes to purchasing a car. I worked with Carter Selby and Tim Branch, the GM, to purchase my brand new X5 and they are both terrific. Carter is by far the best salesman that I have ever worked with. He was very calm, easy and genuinely friendly- never too pushy like I expect from many salesman at a car dealership. He was very knowledgeable about the vehicles and the numbers, but more than that he listened to me, and I felt heard throughout the entire process. He was honest and straightforward in how he handled things, and that immediately put me at ease. It’s rare to walk away from a car purchase feeling like the person on the other side of the table is truly on your side, but that’s exactly how Carter made me feel. Carter and Tim are both a big part of why I decided to buy my car from them and I’ll absolutely be back to work with them and BMW of Arlington for future purchases.” That review describes one customer’s visit.

To start, browse the new and used BMW inventory, value your trade and get pre-approved online, then finish in store at BMW of Arlington.

BMW of Arlington answers this question against the specific vehicle in front of you rather than the model in general. Value your trade and get pre-approved online, then see us at our Arlington showroom, or call 817-968-1153.

Disclaimer: Vehicle features, specifications, pricing, options, and availability may vary based on production timelines and dealership inventory; images are for illustrative purposes only. Starting MSRP figures are national and exclude destination freight charges, tax, title, license, and dealer fees. Standard and available equipment varies by trim, configuration, and model year; confirm the specification of the individual vehicle before purchase. Maximum towing and payload ratings depend on cab, bed, drivetrain, and equipment configuration; see the vehicle’s Owner’s Manual and trailering guide for limits. Electric range and charging times vary with battery, configuration, temperature, terrain, load, and driving habits. Safety or driver assistance features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. Financing and pre-approval are subject to credit approval. Contact BMW of Arlington for complete details regarding current vehicle inventory, pricing, and equipment.