Due to a lack of data, there is no reliability rating for the BMW 340i. Vehicles that do not satisfy statistical significance are not given a score by RepairPal.
accessible repair information The BMW 340i does not yet have any particular reliability ratings, but the average reliability rating for premium midsize automobiles is 3.5, which is above average.
In This Article...
500+WHP N55 vs. B58
The 340i powered by the B58 will be the most convenient for those with outrageous horsepower objectives. The more recent B58 is at a disadvantage since tuning and aftermarket development take time. However, it is already making rapid progress, with numerous examples producing over 700 horsepower, a mark that the N55 finds extremely difficult to reach. Internally, the B58 engine is stronger and more adapted to managing 500+ whp.
If you want to make more than 700 horsepower, a N54 335i is a fantastic purchase. Due to their low cost and the N54’s age, the majority of their flaws have already been addressed. Numerous N54s are running updated twins and producing a modest 450–600whp. Then there are numerous single turbo builds that produce 700+ horsepower and even some that exceed 1000 horsepower.
The N54 is obviously an outdated model with some reliability issues. In comparison to the N55 or B58, a 700whp N54 can still be built for a lot less money. For builds with 500 or more horsepower, we prefer the N54 335i over the N55 335i or B58 340i, while the B58 is a close second.
Update for 20,000 miles
The gorgeous 382-hp turbocharged inline-six under the hood of our long-term BMW M340i was left off for the majority of the spring, which is as illegal as it might be. Only 1000 miles were logged on the odometer from the middle of March until the start of the summer. We only added premium fuel once to its tank from early April to mid-June. But as you probably already realized, our BMW was in no way involved in this. After returning to somewhat normal life, we are back behind the wheel of the M340i and clocking up the kilometres.
The M340i has visited the Rocky Mountains twice in recent months. The first person to cross the Mississippi River on their way to the Big Thompson River to go fishing was news editor Colin Beresford. On the central plains’ straight, open highways, he like the M340i’s composure and quiet temperament as well as how swiftly the sweet-six fired up with a push of the right pedal. Beresford believes that the area around Rocky Mountain National Park has some beautiful views, but he didn’t pause his trip to take a closer look. As an alternative, he sped the M340i along the winding roads cut into the hills.
The second westward journey of the M340i was driven by news editor Connor Hoffman. Hoffman traveled further than Beresford, traveling through Colorado and ending up at Capitol Reef National Park in Utah. He first voiced his displeasure with the 3-series’ air conditioning system at that location, in the sweltering 100 degree desert heat.
A few issues have surfaced. The dynamic grille shutters, which are one of the components that help the BMW achieve its exceptional fuel economy, malfunctioned during Beresford’s drive and set off the “Check engine” light. Fortunately, they remained in the open position, and during his voyage there were no cooling problems. The dealer rebuilt the lower shutter component under warranty once they were back in Michigan. The dealer completed the second scheduled maintenance for the M340i at 20,000 miles, which included an oil change, cabin air filter replacement, and other inspections. This work was covered by BMW’s 36,000-mile complimentary maintenance program. We changed the dead battery ourselves for $3 after seeing an indicator that read “Vehicle Key: battery depleted” on the dashboard. We lost a front Michelin Pilot Sport 4 S due to a pothole in Michigan, leaving us with a $310 loss.
BMW’s M340i is still a rocket of a sedan that can eat up vast sections of highway as we pass the midway point. Even though the hard, rigid seats continue to draw a lot of criticism, we are simply relieved to be sitting in them again after a protracted spring.
surpasses performance targets!
The 340i in RWD with MPPSK is a fun car with enough power to meet the demands of even the most seasoned drivers.
Despite having this car for 34 months, I still enjoy the driving. BMW undoubtedly underestimated the car’s power, which is good news for eager drivers! The Dinan suspension package should be added for reduced wheel gap and enhanced cornering confidence. On lengthy trips, the seat comfort is excellent, and the steering wheel is among the best in the automotive business. Of course, comfort will vary depending on height and body type. At 73.5 inches and 194 pounds, I can comfortably sit in the passenger seat of my car for long periods of time. In comparison to the 5 series, the 340i has the advantage of being able to park in confined locations. Overall, I’d give the vehicle a “A” for performance, efficiency, and adaptability. I’m eager to test-drive the upcoming S58-powered M3!
The BMW M340i is dependable.
Even though the BMW M340i xDrive has only had one yearly service at about 7,500 miles, it has so far shown to be dependable. The Park Assistant seemed to have run into a ghost more than once and then just decided to disappear, for whatever reason. Every time, after switching the car off and back on, it reverted to regular operation.
So far, the only costs associated with ownership have been the cost of insurance and petrol, both of which are quite similar to those of the M2. I get around 17 mpg on average, which is respectable given that I do most of my city driving in Sport Plus. On a road trip to Northern Arizona, I once returned 38 mpg while traveling at a speed of about 80 mph, which is outstanding for a 382 horsepower turbo-six. No BMW is the least expensive to operate, but this one isn’t either. I’m satisfied with the cost of ownership so far in general.
How trustworthy is the BMW B58?
It’s difficult to talk about dependability and engine issues with a recently developed engine. The BMW B58 has just been around for six years, which is not nearly enough time to determine its long-term dependability. But up to this point, the B58 engine has proven to be dependable. Some people assert that the B58 is trustworthy by “BMW standards,” but we think it is reliable by any measure.
Again, the newest Supra models from Toyota are powered by the B58 3.0L turbo engine. They often meet the greatest levels of reliability. Toyota purportedly made some minor tweaks and underwent reliability and longevity testing on the B58. Uncertainty surrounds whether or not the modifications were applied to the B58 found in BMWs.
In any case, the B58 is developing into a fantastic engine. Rewinding briefly to the N54, there were many issues with the engine that became clear within the first 2 to 6 years of use. That is absent from the B58. The N54 still provides amazing internal reliability despite reliability problems. At factory power levels, the entire cylinder head, rods, rod bearings, pistons, rings, etc. are almost indestructible. The timing chain from BMW is likewise very good.
These engines frequently surpass 250,000 miles in usage. They just cost more to transport because of other issues including fuel injectors, coolant leaks, water pump failures, carbon buildup, and oil leaks. The B58 ought to have a similar lifespan without nearly as many ancillary system problems.
Which BMW is the most trustworthy?
When it comes to the creation of sport sedans, BMW has established the benchmark for premium vehicles with the E90 330i that Acura and Volvo aspire to match. The BMW E90 330i is your best option if you’re looking for a sedan that provides the ideal balance of functionality and performance without sacrificing stability and comfort.
The BMW E90 330i is one of the most popular luxury vehicles in the United States and is not only the best-selling model in the 3 Series. It also sold over 336,232 units. Even in the mid-size luxury automobile category, the BMW 3 Series received the Top Safety Pick designation in 2006. The best car options in terms of driver injury prevention and driver restraint features are highlighted by this award.
A 340i is it a decent car?
A fantastic “Driver’s Car,” the BMW 340i xDrive is. It has a ton of performance features, plush interior finishes, and is enjoyable to drive. This 3-Series 340i xDrive is so much fun to drive and has more space and features than its predecessors. You’ll enjoy it.
Has the BMW 340i been retired?
BMW has stopped using the name BMW 335i as part of their 2016 model revision. The 2016 BMW 3-series model is known as the 340i and it is packed with improvements, technological advancements, and other amenities.
Is F30 340i trustworthy?
The 340i vehicles have so far proven to be dependable in every way. Of course, we’re comparing it to other contemporary BMWs when we say it’s reliable. As a mid-range performance vehicle, the 340i should be expected to have higher maintenance and repair expenditures. It isn’t a Toyota. The B58-powered 340i, however, seems to be a great advancement over the N54 and N55. Time will tell if common issues surface later; it’s still early.
335i or 340i, which is superior?
This issue will also be covered fairly quickly. The main comparison of 335i and 340i performance will be in the Tuning section. The 335i and 340i actually give remarkably similar real-world performance. Due to a slight increase in power and torque, the 340i appears to be slightly faster. The 340i has 320 horsepower and 330 torque, while the 335i’s N55 engine produces 300 horsepower and 300 torque. The B58-equipped BMW 340i vehicles also benefit from a marginally improved power curve.
From the factory, 0-60 times are very similar, hovering around 5.0 seconds. Times for the quarter mile are in the mid-13s at 105 mph. There are various factors that influence these timings, and different testing yields different findings. AWD or RWD, transmission, altitude, road conditions, tires, and drivers are some of the key variables. The 335i and 340i both have similar performance straight out of the factory.
How authentic is the BMW M340i?
This vehicle would be the M3 if it had been released ten years earlier. It first creates irrational power. The 2021 BMW M340i produces 382 horsepower and 368 lb-ft of torque despite internet uhh, nethers-measuring. It’s a lot, that. The M340i’s AWD variant can go from 0 to 60 mph in 4.1 seconds. Therefore, in my opinion, this is a true M vehicle. At the very least, it was ten years ago.
However, with each successive introduction of a M vehicle, BMW has moved the goalposts. The BMW M3 used to produce 333 horsepower and roughly 260 lb-ft of torque. Sincerity be told, even such figures seem excessive. The new M3 Competition, though, is a crazy rocket with 503 horsepower and 479 lb-ft of torque. The M5 produces even more, and so forth. Every year, consumers demand more M, and BMW must deliver if it hopes to sell any.
What distinguishes the 340i from the M340i?
Recently, this G20 BMW M340i has been a very active sports sedan. It has faced off against two Camaros, a 2007 Shelby GT500, and an F10 BMW M5, losing all but one of those battles in the previous month alone. But this time, the challenger just so happens to be a very comparable vehicle.
the BMW 340i from the F30 generation. A 3.0-liter turbocharged straight-six engine with 322 horsepower (326 PS) and 332 lb-ft (450 Nm) of torque debuted in 2015 to replace the 335i model.
The 340i was a fast automobile even when it was brand-new, reaching 60 mph (96 kph) in just under 5 seconds flat. But is it as speedy as the more recent G20 M340i? Obviously not. The latter also utilizes a 3.0-liter turbo-six with a 382 horsepower (387 PS) and 369 lb-ft (500 Nm) torque rating. To 60, it takes around half a second less time.
Fortunately, both Bimmers have been tuned. The older 340i sports a catless downpipe, intake, and E50 tune whereas the M340i comes with a catless downpipe, charge pipe, and E50 setup. According to the uploader, the first run didn’t end in a clean start, but everything was OK the second time around. The two cars raced twice, each time starting from a roll at 40 mph (64 kph).
From our vantage point, the first run seemed to be flawless; the F30 may have jumped it somewhat, but the M340i had plenty of time to catch up. We won’t reveal what transpired during the second run, but suffice it to say that we would have liked to see a “best three out of five” scenario for these cars.
If you like the G20 BMW M340i, you can buy one for $54,700 at your nearby BMW dealer if you don’t mind having rear-wheel drive or $56,700 if you do and want the xDrive all-wheel-drive model. But make sure to bargain.