The BMW 3 Series on sale is the sixth generation, the chassis code is F30, and the 3 Series long axle version produced by BMW Brilliance, code is F35, the sixth generation has been on sale since 2012, it has reached the end of the product, and is about to usher in a new generation, so the current 3 Series has a very large discount.
 
This generation of BMW 3 Series is the most popular model is 320Li, the total power composition is the early and late models, the early use of the N20B20 engine, after 2015 to use the B48B20C engine, the two are not significantly different in power output, both belong to the low-power version, the maximum horsepower is 184 horsepower, the zero hundred acceleration time varies according to the car conditions, It is normal for new cars to run for 7.6 seconds, and for old cars to run for 8 seconds, but now the first-order program of the B48 has become very common, and it is easy to brush into a high-power version, and it is much better than the N20 series engine in terms of reliability, which is confirmed in the reliability survey of "Consumer Reports".
 
The gearbox is also a major advantage of the BMW 3 Series, BMW's tuning of the ZF 8AT has been very mature, and it is the best set of gearboxes in the BBA class, which is also the reason why the driving experience is still excellent in the case of 320Li in the case of power is not outstanding, good shift logic and smooth shift action are enough to make up for the shortcomings of less abundant power, so that drivers are more enthusiastic about driving it.
 
The suspension tuning of the E90 generation BMW 3 Series is impressive, full of toughness, flexible and crisp over speed bumps, and the handling is also very good, but to the F30 generation of the 3 Series, BMW has gradually converged to comfort, the suspension adjustment is soft, and after the use of electronic steering, the steering feel is not as direct as the hydraulic steering of the E90, but in the BBA, the BMW 3 Series is still the best one to handle.
 
The factor that most affects the ride experience of BMW 3 series is the tire, BMW in order to reduce the spare tire, the use of depressurized running tires, commonly known as run-flat tires, this kind of tires are generally hard, after the suspension is softened, the harder tire wall will amplify some fine vibration, tire noise will be much larger, if it is a high-end model, a larger size of the wheel will be used, the tire wall will be thinner, tire noise and vibration will be more obvious.
 
In terms of interior, the materials of BMW 3 series will be better than Mercedes-Benz C-class, for example, low-profile models also provide the option of leather seats, and the workmanship is better than that of Mercedes-Benz C-class, and the interior will not be as abnormal as Mercedes-Benz C-class during intense driving, the only shortcoming is that BMW's interior style is still dull, and the appearance is not as luxurious as Mercedes-Benz C-class.
 
The iDrive system of the 3 series is also divided into two versions, early and late, when it was first listed, the logic of the iDrive system is very clear, and the operation is very intuitive, but after the mid-term facelift, more functions have been added, although it seems to be an upgrade, but the result is more than worth the loss, the logic is messy, and the difficulty of getting started is much greater than that of the previous model.
 
The rear seats of the BMW 3 Series are remarkable, the long-axle version has plenty of seating space, and there is no obvious difference between the handling and the standard axle version, so it is recommended to give preference to the long-axle version. The seat cushion length is long enough, the support for the thighs is better than that of the Mercedes C-class, and the headrest is softer than the Audi A4L, but the material of the seat cushion is hard, and the seat back angle is also steep, so it will not be too comfortable for long drives.
 
Because it is a rear-wheel drive model, the bulge of the central platform of the BMW 3 Series is very high, and the volume is also very large, and the central seat is made of hard material and has many protrusions, so passengers sitting in the middle will feel quite uncomfortable.
 
The reliability of the BMW 3 series should be divided into the early and late stages, the N20 engine used in the early stage will have oil leakage after a certain number of years, and the gearbox will also have oil leakage, and there are many small problems, but after switching to the B48 engine, the reliability has been greatly improved, at least the 2015-2019 model has not had concentrated engine complaints. Overall, the improvement in reliability has been significant.
 
The BMW Brilliance 320i Fashion participated in the second batch of crash tests in 2013 of the China Crash Test C-NCAP and received a 5-star safety rating with an overall score of 56.5 points, compared to 5-star ratings for both E-NCAP and A-NCAP. In the IIHS crash test in the United States, the 2018 BMW 3 Series received the highest score (Good) in all other crash items except for the small area collision of the co-pilot, and won the TSP award.
BMW 3 Series test report