As we all know, the Corolla/Ralink with Toyota's latest TNGA 1.5L engine has been on the market for some time and has received good market feedback.
But after all, this is a brand new engine, and many consumers often ask us, what is the evaluation of this powertrain? In particular, after a long and long mileage of use, how does the engine perform?
To answer this question, we recently went to the Toyota Motor R&D Center to experience the durability of the TNGA 1.5L model from zero distance.
Our durability test is to simulate the situation of the engine after a long and long mileage of use by replacing the deteriorated engine mat. Especially in the rubber bushing, it can be clearly found that the surface has cracked. However, its shock absorption and elasticity are similar to the new ones.
The TNGA 1.5L model that participated in the test was a Coronal and a Ralink. One of them replaced the aging tripod.
Open the engine cover, just by the naked eye to observe, can not see the difference between the two car engine vibrations. Of course, it's not enough to just look at it. The key is to get inside the car, test it with the instrument, and feel it for yourself.
The first is Leiling. The engine speed slowly increased from 1000 rpm to 3000 rpm, and the decibel meter value slowly increased from 39.3dB to a maximum of 55.2dB.
Ralink Static (1000rpm)
Leiling Static (2000~3000rpm)
Then there's Corolla. In the same test, the 1000rpm start slowly increased to 3000 rpm. The decibel meter displays a figure similar to Ralink, which is about 41db at 1000rpm. 2000rpm-3000rpm is between 50.3db-58db.
Overall, it is relatively quiet, and the gap between the two cars is still difficult to feel even with the help of instruments.
Corolla Static (1000rpm)
Corolla Static (2000~3000rpm)
In addition to sound testing, we also use vibratomers to check the vibrations in the car. The same is the first test of Rayling, and then the test of Corolla. The test point is the steering wheel.
Leiling Static
Corolla Static
It can also be seen that the test results are also very close. In addition to using a vibrometer, we also tried a more intuitive water bottle, and the results were similar.
Through the communication with other media peers, it was also found that everyone could not distinguish the difference between the two cars.
Leiling
Corolla
At the end of the static experience, drive a few more laps to feel the dynamic changes.
The media counterparts who participated in the test each drove two test models in a row for comparison. When driving at a speed of about 60 kilometers per hour, the data recorded by the two decibel meters is almost the same. Because it is dynamic, the vibrometer is inaccurate, so the vibration is mainly our subjective feeling.
Overall, whether it's starting to accelerate or step on the throttle deeply, the NVH feeling that the two cars give me is still quite close. The media peers who participated in the test together are also veteran drivers who have read countless cars, and everyone's conclusions have always been very consistent.
At most, everyone can only feel the subtle differences in the tuning of the two cars, but if you talk about NVH performance alone, you can't feel any change in any way.
Kung Fu shoots
All along, Toyota has a good reputation of "driving is not bad". In 2021, the three-year vehicle retention rate of Toyota brand TNGA models continues to rise, taking the statistics of September this year as an example, in terms of the 3-year vehicle retention rate of the joint venture brand, the retention rate of Toyota brand TNGA models reached 86.4%, an increase of 1.9% over August!
Through this simulation test, we really feel that the TNGA 1.5L engine can still perform for a long time after experiencing a simulated 100,000 km range. It is a good continuation of the consistent high QDR gene of TNGA models.
The engine also features a range of black technologies, including a new high-speed combustion system. The model has also been improved in the interior material, throttle opening, and engine compartment sound protection structure.
The TNGA 1.5L model is able to achieve low fuel consumption and strong power while providing us with a car experience that exceeds our expectations.