2018 BMW 340i — buzzing noise only at one engine RPM — trying to narrow this down
There is a light buzz from the dash at one narrow RPM range. It disappears above and below that speed. Any good method for locating trim resonance without rand…
3 owner reports for this model.
BMW 340i
2018 BMW 340i — single clunk over small sharp bumps
There is one front-end clunk over pothole edges and driveway lips, but larger smooth bumps do not reproduce it. How would you isolate end links, strut mounts,…
2018 BMW 340i — tires or pads first for a beginner autocross season?
Budget allows one meaningful upgrade. Current street tires are decent and brakes are standard replacements. Which upgrade helps a new driver learn more before…
2018 BMW 340i — buzzing noise only at one engine RPM
2018 BMW 340i xDrive, about 70,500 miles. There is a light buzz from the dash at one narrow RPM range. It disappears above and below that speed. Any good metho…
2018 BMW 340i — 50,000-mile ownership report: what actually broke?
2018 BMW 340i xDrive, about 118,500 miles. I just crossed 50k miles and want to log maintenance, unscheduled repairs, tire life, fuel economy, dealer visits, a…
2018 BMW 340i — dealer cannot reproduce an intermittent warning
I have brought the car in twice for the same intermittent warning and both visits ended with could-not-reproduce. I have video and timestamps.
2018 BMW 340i — would a large MSRP cut make you wait before buying?
2018 BMW 340i xDrive, about 78,000 miles. Price cuts and incentives are good for new buyers but can hit recent owners resale hard. How much do you consider pot…
2018 BMW 340i — what changed after 100k miles?
2018 BMW 340i xDrive, about 159,500 miles. The car has crossed 100k and still drives well. I want to stay ahead of age-related failures instead of waiting for…
2018 BMW 340i — how should a forum discuss a breaking recall before every VIN is loaded?
A new recall announcement can hit the news before owners see anything in their VIN lookup. What is the best way to separate confirmed affected populations, pen…
2018 BMW 340i — oil level drops between services with no puddle
2018 BMW 340i xDrive, about 31,000 miles. I started measuring the oil level every few hundred miles and it is definitely falling between changes. There is no o…
2018 BMW 340i — new model reveal: what matters after headline specs?
2018 BMW 340i xDrive, about 93,500 miles. Launch stories focus on horsepower and screens, but I care about curb weight, tire sizes, cargo dimensions, serviceab…
2018 BMW 340i — humming rises with road speed, not engine RPM
2018 BMW 340i xDrive, about 119,000 miles. There is a low hum that rises with road speed regardless of engine RPM.
2018 BMW 340i — first HPDE in a stock street car
I am doing my first beginner track day and do not care about lap records. Besides fresh brake fluid, enough pad, good tires and torque checks, what is truly ne…
2018 BMW 340i — is this actually a good used-car deal?
The online price looks competitive, but I am trying to judge the entire deal rather than the headline number. What should I compare besides mileage, history, c…
2018 BMW 340i — intercooler before adding more boost?
After repeated pulls the car softens as intake temperatures rise. Would you prioritize cooling before increasing boost, even if the current setup is otherwise…
2018 BMW 340i — 50,000-mile ownership report: what actually broke? — trying to narrow this down
2018 BMW 340i xDrive, about 107,500 miles. I just crossed 50k miles and want to log maintenance, unscheduled repairs, tire life, fuel economy, dealer visits, a…
2018 BMW 340i — history report shows a minor accident with no details
Vehicle-history report lists a minor accident several years ago but does not describe the repair. Paint looks okay in photos.
2018 BMW 340i — cheap project has enough margin to fix and resell?
I found a running car with cosmetic damage and deferred maintenance at a low price. Before treating it as a flip, how do you budget hidden repairs, title/regis…
2018 BMW 340i — surface rust underneath a winter daily
2018 BMW 340i xDrive, about 96,000 miles. There is early surface rust on brackets, fasteners and seams underneath, but nothing structural. For a salt-belt car,…
2018 BMW 340i — steering wheel vibration only at one highway speed
The car is smooth around town, but there is a noticeable steering-wheel vibration in a narrow highway speed range. It gets better again above that speed. Tires…