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BMW M’s DCT (Dual-Clutch Transmission) was one that had almost no critics. Fans who owned M cars with the DCT absolutely loved it for its rapid-fire shifts, ease of use in traffic and added theater over a traditional automatic, especially with that funky gear selector.Jan 11, 2021
double-clutch transmission
Want to switch gears yourself but still enjoy the advantages of a torque converter gearbox? This combination triggers BMW M for sporty drivers with the M DCT (M double-clutch transmission). This is thanks to the extremely fast M DCT, which can be switched on automatically or manually without interrupting the traction.May 22, 2018
Debuted first in the M3 Coupe, Sedan, and Convertible, the Performance Option 7-Speed Double-Clutch Transmission is currently priced at $2,900 and is available for the new M models like the M3 and M4. The 7-speed M DCT is the BMW transmission system that allows for fast gear change.
The real reason is that the ZF eight-speed is more efficient and easier to calibrate for ultimate efficiency. And because efficiency is more important than almost all else in today’s automotive climate, the DCT is a casualty of the times. There’s also the fact that BMW M will soon be making a jump to electrification.
Many DCTs can operate in two modes, a fully automatic mode, so the car’s computer chooses when to changes gears for you, or a manual mode, which lets you select gears via buttons, steering wheel paddles, or by moving the gear stick.
M DCT adds about 45 pounds, according to BMW; our 3630-pound test car weighed in 30 pounds heavier than our last manual M3 coupe. The M DCT uses two oil-cooled, wet multi-disc clutches and operates much like other transmissions of this type, such as VW/Audi’s DSG/S tronic.
The dual-clutch system is a robust, smooth and efficient transmission. If used properly, it should last 10 years without a problem, even with hard driving.
To launch a car with dual-clutch, you should press the brake with your left foot and press the throttle with your right foot and quickly let go of the brake. The critical thing here is to take care that you don’t hold the brake for too long.
Further, dual-clutch transmissions do not require the driver to manually change from one gear to another using the shift lever. Instead, the gear selection process is automated so that a DCT can act as an automatic transmission.
Depending on the vehicle and the driver, a CVT can provide a smoother driving experience when comparing it to a traditional automatic. According to Carfax, one of the most significant advantages to having a CVT is that they are often more fuel-efficient than a regular automatic.
Dual-clutch transmission
Automatic transmission, commonly associated with American car owners, does all the work for the driver using clutches, a torque converter and gears. Dual-clutch transmission (DCT) lies in between.
The BMW’s Steptronic automatic transmission gives you options so that you don’t have to choose between an automatic or manual transmission. The gearbox with the Steptronic gives you a choice between using a manual shift when you want to and changing over to the multi-drive mode automatic when you need it.
BMW Transmission Cost
The cost of a new BMW transmission could be over $3,500 depending on the vehicle, however, transmission services such as fluid changes and a transmission fluid flush are considerably less costly, in some cases costing less than $150.
A direct-shift gearbox/DSG or dual-clutch transmission/DCT, as its name suggests, utilises two separate clutches in place of a singular item to transmit torque further along the vehicle’s driveline. It is essentially two clutches and two gearboxes in one car.
Generally, a dual-clutch transmission (DCT) automatic shifts faster than a standard hydraulic automatic transmission with a torque converter, or a single-clutch automated manual transmission. … Using a freewheel may reduce shift time as it may not be necessary to use the clutch.
A dual-clutch transmission is directly connected to the engine. Regular automatics rely on a middleman – known as the torque converter – to get engine power to the wheels. The engine pressurizes transmission fluid, which then spins the driveshaft and makes the wheels turn. That extra step requires extra fuel.
If you’re trying to get an under powered car up a hill or for merging into traffic, the CVT wins. Ultimately, in the battle of the DCT vs manual gearboxes, for outright performance, the DCT gearbox is the undisputed winner.
Should you require a replacement DCT transmission, expect a repair bill of $4,000 or more. However, you can keep repairs at bay through routine maintenance. Ensure you change the fluid in your DCT transmission at or before its recommended interval to make it last as long as possible.
These DCTs are STOUT so you shouldn’t have to replace the clutch unless you’re launching the car at every red light and throwing it into first all the time while coming to a stop THEN maybe you’ll cause premature failure..
If you start to hear whining, humming, or clunking noises under your BMW, it could be a sign of transmission trouble. These noises could stem from the fact that the transmission fluid is breaking down.
DCTs tend to provide better fuel economy than automatic transmissions and smoother performance than manual transmissions and AMTs. Because they shift smoothly and with a high-degree of precision, they’ve often been preferred in the arena of performance driving.
Clutch Replacement Cost – RepairPal Estimate. Labor costs are estimated between $575 and $725 while parts are priced between $627 and $650. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed.
A smooth and light input will result in good efficiency and in most cases comes very close to the efficiency numbers you can achieve from a manual gearbox-equipped car. Thus a DCT is the best all-around package, especially if your driving scenario isn’t limited to just city or highway driving.
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