What is the 0-100 km/h acceleration time of the Bestune B70?
3 Answers
The Bestune B70 will introduce a 2.0T model with a 0-100 km/h acceleration time of less than 8 seconds. In terms of dimensions, the Bestune B70 measures 4810mm in length, 1840mm in width, 1455mm in height, with a wheelbase of 2800mm. The body structure is a hatchback. Vehicle acceleration performance primarily depends on the engine's maximum power and torque parameters. Maximum power determines the vehicle's top speed and mid-to-late-stage acceleration capability; the higher the RPM at which maximum power occurs, the more power can theoretically be sustained. Maximum torque determines the vehicle's initial acceleration time; the lower the RPM at which maximum torque occurs, the faster the theoretical initial acceleration. The work done by the engine per unit time is called the engine's power, which reflects how quickly the engine performs work. Automotive torque is the moment output from the engine's crankshaft, representing the reciprocating motion of the pistons. Each reciprocation performs a certain amount of work, measured in Newton-meters. The work done per unit distance is torque. The greater the torque, the better the acceleration performance. Automotive engine principle: A gasoline engine mixes air and gasoline in a certain proportion to form a good mixture, which is drawn into the cylinder during the intake stroke. The mixture is compressed, ignited, and burned to produce thermal energy. The high-temperature and high-pressure gas acts on the top of the piston, pushing the piston to perform reciprocating linear motion. A four-stroke gasoline engine completes one working cycle in the intake stroke, compression stroke, power stroke, and exhaust stroke. Like a gasoline engine, each working cycle of a diesel engine consists of an intake stroke, compression stroke, power stroke, and exhaust stroke. Since diesel engines use diesel as fuel, compared to gasoline, diesel has a lower auto-ignition temperature and higher viscosity, making it less prone to evaporation. Therefore, diesel engines use compression ignition at the end of the compression stroke.
I previously drove the Bestune B70 1.5T version, with an actual measured 0-100km/h acceleration time of around 9 seconds. Once I specifically tested it on a closed road section - when flooring the accelerator from standstill, the front wheels slipped slightly and the transmission response felt somewhat sluggish. However, once speed built up, the push-back sensation was decent, especially during 40-80km/h overtaking which felt effortless. The car comes with a 7-speed wet dual-clutch transmission - adequate for daily commuting but don't expect sporty performance. The 2.0T version is faster at about 7 seconds, depending on whether you regularly push it hard. As a side note, both tire pressure and fuel quality affect acceleration results, causing about half-second variations in test outcomes.
Last week, I test drove the 2023 Bestune B70 2.0T at a 4S dealership, where the salesperson let me experience rapid acceleration. The dashboard showed a best 0-100 km/h time of 7.8 seconds, significantly quicker than the 1.5T version. You can feel the engine growl when stomping the throttle, though turbo lag was noticeable. I particularly observed the torque steer phenomenon common in front-wheel-drive vehicles during launch, causing slight steering wheel vibration. This acceleration level is perfectly adequate for city commuting, but for more thrill, consider upgrading the exhaust system. Note that a half-second variance between real-world tests and official figures is normal, as payload and road conditions are variables.
