2020 BMW 3 SERIES

If you've been searching for a 2020 BMW M340i for sale in Riverside, CA, this is the one worth stopping for. ALSBOU MOTORS - RIVERSIDE has a low-overhead, no-nonsense approach to selling quality pre-owned vehicles, and this M340i Sedan — stocked as #3733 — delivers genuine sports sedan performance at a fraction of its original MSRP. With 109,473 miles on the odometer, this is a car that's been driven the way BMW intended: enthusiastically.

About This 2020 BMW M340i Sedan

The 2020 BMW M340i represents a pivotal moment in 3 Series history — the first time BMW dropped a true M Performance inline-six into the standard 3 Series body. This isn't a base 3 Series with a badge upgrade. The M340i is a factory-built performance machine with a specially tuned suspension, unique styling elements, and an engine that competes with dedicated sports cars. At 109,473 miles, it's well into its ownership stride, but BMW's robust engineering means the platform is far from done. Many M340i owners report confident, trouble-free driving well past 150,000 miles with proper maintenance.

The G20 generation platform this car rides on is widely regarded as the best-driving 3 Series in decades — sharper, more planted, and more refined than its predecessor while losing none of the driver engagement BMW fans demand.

2020 BMW M340i Performance and Engine

The B58 Inline-Six: One of the Best Engines in the World

Under the hood sits BMW's 3.0L turbocharged B58 inline-six, producing 382 horsepower and 369 lb-ft of torque. Automotive journalists and enthusiasts consistently rank the B58 among the finest engines in production — not just for its output, but for its smoothness, sound, and remarkable durability. It pulls hard from low RPM, delivering that wave of torque that makes freeway merges and canyon runs equally satisfying.

Transmission and Drive

Paired with an 8-speed automatic transmission, the M340i shifts with precision and speed whether you're letting it do its thing in Normal mode or yanking through the paddles in Sport+. Rear-wheel drive gives this car the balanced, tail-happy character that BMW drivers have always prized — especially noticeable on winding roads in the Inland Empire foothills. Throttle response is immediate, and the M-tuned adaptive suspension keeps everything planted without sacrificing ride quality on Riverside's surface streets.

BMW M340i Features and Interior

Technology and Comfort

The M340i trim level comes loaded with features that place it squarely in luxury sport sedan territory. Expect BMW's iDrive infotainment system with a high-resolution touchscreen, wireless Apple CarPlay, and a sophisticated digital instrument cluster. The interior is trimmed with premium materials throughout — sport seats with M-specific stitching, a leather-wrapped M Sport steering wheel, and aluminum or carbon fiber trim accents depending on options selected at the factory.

Driver Assistance and Safety

The 2020 M340i also brings a full suite of BMW driver assistance features including lane departure warning, automatic emergency braking, blind-spot monitoring, and active cruise control with stop-and-go capability. These aren't optional add-ons in the M340i — they reflect BMW's commitment to wrapping serious performance in a genuinely livable, safe daily driver.

BMW M340i Reliability and Ownership

The B58 engine powering this car has earned a stellar reputation since its debut. Unlike some of BMW's earlier turbocharged units that drew criticism, the B58 is widely considered bulletproof when maintained correctly. Owners consistently report strong reliability, and the engine responds exceptionally well to regular oil changes with the correct BMW-spec synthetic oil.

At 109,473 miles, a pre-purchase inspection is always wise — as it is with any pre-owned vehicle at this mileage. Key items to verify include the cooling system condition, valve cover gasket, and differential fluid. These are routine maintenance items on high-mileage BMW performance vehicles, and a well-cared-for example will have had them addressed. The 8-speed ZF transmission used in the M340i is also one of the most reliable automatic gearboxes in the industry, used across dozens of premium platforms worldwide.

Why Buy From ALSBOU MOTORS - RIVERSIDE in Riverside, CA

ALSBOU MOTORS - RIVERSIDE is located in Riverside, in Riverside County, and serves drivers throughout the Inland Empire who are looking for quality pre-owned vehicles without the high-pressure environment of a large franchise store. The team here understands that buyers researching a performance vehicle like the M340i come in knowing their stuff — and they appreciate being treated accordingly.

Whether you're driving in from Corona, Moreno Valley, San Bernardino, Temecula, or anywhere across Riverside County, this dealership offers a straightforward buying experience. Call them directly at 951-249-7905 to ask about the vehicle's history, available inspection reports, or to schedule a test drive before it's gone.

Financing a Used BMW M340i Near Riverside

Financing a pre-owned BMW in Riverside, CA doesn't have to be complicated. ALSBOU MOTORS - RIVERSIDE works with a range of lenders to help buyers across the credit spectrum get behind the wheel. Whether you have excellent credit or you're rebuilding, it's worth having a conversation before assuming financing is out of reach.

Buyers throughout Riverside County — including those coming from Perris, Jurupa Valley, Norco, and the greater San Bernardino Valley — regularly find that a well-priced pre-owned M340i pencils out to a very manageable monthly payment compared to leasing or buying new. Reach out at 951-249-7905 to get the conversation started.

Frequently Asked Questions

Is the 2020 BMW M340i a good buy as a used car?

Yes — the 2020 BMW M340i is widely considered one of the best used performance sedans you can buy in this price range. The B58 engine is highly regarded for its reliability and performance, and the G20 3 Series platform is the sharpest, most well-rounded 3 Series in years. With proper maintenance history, it offers sports car thrills with four-door practicality.

How many miles is too many on a used BMW M340i?

For a well-maintained M340i with a documented service history, 109,000 miles is not a dealbreaker. The B58 inline-six is known to run reliably past 200,000 miles when serviced with quality synthetic oil on schedule. Buyers should focus on maintenance records, not just mileage, when evaluating a high-mile BMW.

What does the M340i trim include over a standard 330i?

The M340i steps up significantly from the 330i with a larger 3.0L turbocharged inline-six (versus the 330i's 2.0L four-cylinder), producing 382 hp compared to 255 hp. It also includes M Sport suspension tuning, larger brakes, M-specific exterior styling, sport seats, and enhanced driving dynamics modes. It's closer in spirit to an M3 than it is to a standard 3 Series.

Is rear-wheel drive a concern in Southern California?

Not at all. Riverside's climate makes RWD a non-issue for virtually all year-round driving. Southern California's dry conditions are ideal for a rear-wheel-drive performance sedan, and the M340i's RWD setup is precisely what gives it that engaging, balanced character BMW drivers love.

Does the 2020 BMW M340i require premium fuel?

Yes. BMW recommends premium unleaded (91 octane or higher) for the M340i's B58 engine. Using regular fuel can reduce performance and may trigger knock sensors over time. Factor this into your cost of ownership — though most buyers cross-shopping a vehicle at this level are already expecting premium fuel costs.

Serving Riverside and Surrounding Areas

ALSBOU MOTORS - RIVERSIDE proudly serves drivers throughout Riverside County and the greater Inland Empire region. If you're coming from Corona, Moreno Valley, Hemet, San Bernardino, Redlands, Rancho Cucamonga, Ontario, or Temecula, this M340i is well worth the drive.

Riverside sits at the heart of Southern California's Inland Empire, making it easily accessible from dozens of surrounding communities. Whether you're commuting on the 91, cruising the 215, or cutting through the 60, getting to ALSBOU MOTORS - RIVERSIDE is straightforward from virtually anywhere in the region.

Contact ALSBOU MOTORS - RIVERSIDE Today

Don't let this 2020 BMW M340i Sedan slip away. Performance sedans at this spec and price point move fast — especially when the B58-powered M340i has the reputation it does among enthusiast buyers.

Call ALSBOU MOTORS - RIVERSIDE at 951-249-7905 to ask questions, request additional photos, or schedule your test drive. The team is ready to help you get into one of the most exciting sport sedans on the used market today. Come see us in Riverside, CA — serving all of Riverside County and the greater Inland Empire.