Owning a BMW 645 requires a convertible and a 6-speed manual transmission exclusively. Fantastic performance is provided by this combination. When you select sport mode, the BMW 645 transforms into an almost uncontrollable beast! The journey is really relaxing. not very rigid. Just enough bounce is present to soften the sharp road imperfections. With the factory-installed suspension, the car handles incredibly well. By adding the sport package, you get active steering, which improves the handling of a car that already handles well. Movements of the steering wheel are exact. Finding a vehicle with the winter package, which adds heated seats and a heated steering wheel, is something I strongly advise. The seats are really cozy. Long journeys are a true delight. Don’t be terrified of lengthy departures from your home. Even with the soft top storage cover down, the BMW 645’s trunk is significantly bigger than it appears.
Not many drawbacks exist for this model. The few issues I have are..
One cup holder only
2. Both early and later models’ i-drives are antiquated. On models from 2004 to 2006, there is no Bluetooth, USB, or AUX port. The consumer has access to a variety of optional aftermarket solutions.
3. The back seat appears smaller than my old BMW 3 series convertible e46 model, despite the car’s size.
4. The Guage bundle has a lot of deficiencies. BMW removed the customary fuel economy gauge that had been a fixture of BMW dashboards for almost 40 years for an unknown reason. Not even a coolant temperature gauge is present. However, there is a gauge for oil temperature. This is all bizarre to me. I would have preferred to have a fuel economy gauge and the opportunity to view the readouts on the driver’s scrollable digital readouts.
Again, if the absence of these instruments really bothers someone, there are aftermarket options.
The majority of these problems really go away when you get behind the wheel, lower the top, and press the gas. You’ll be grinning from ear to ear.
Buyer beware applies to every used car transaction. However, if you must purchase a used BMW, check to see if the necessary maintenance has been carried out as well as the 4.5 liter V8’s few significant weak points.
These engines were infamous for severe oil and coolant leaks, oil burning, and tailpipe smoking.
There are three repairs that, although they are commonplace at the dealer level, can be expensive for an individual to make.
Search for vehicles where oil valve seals, valve cover gaskets, timing cover gaskets, and any other parts connected to an oil leak or oil burning have been repaired. Look for vehicles as well that have had the main coolant pipe changed. Most of these repairs are lifetime repairs once they have been completed. These engines are incredibly robust and can withstand a lot of hard driving aside from those three problems. These motors may travel hundreds of thousands of miles if properly maintained.
In This Article...
A BMW 645Ci’s top speed?
It would take a book to completely describe all of the amazing innovations found in the BMW 6 Series coupe. There are the standard features, such as active cruise control, stability control, active roll stabilization, dynamic brake control, a head-up display, Bluetooth phone technology, and even a streamlined iDrive interface with a menu button to save you from getting completely lost in the overwhelming menu-driven electronic jungle.
The car’s dynamic headlights, which can pivot and point into a turn to better illuminate the region in which the car is headed, and LED brake lights, which brighten as brake pressure builds, are less expected but equally intriguing. Another interesting feature is the optional dynamic steering, whose fast ratio significantly slows down at 75 mph to improve stability up to the car’s restricted top speed of 155 mph.
Such speeds require a strong engine, which the 2004 BMW 645Ci’s well-known 4.4-liter V-8 has little trouble providing. This 4-cam aluminum-block V-8 produces 330 lb.-ft of torque at 3600 rpm and 325 horsepower at 6100 rpm while being burbly but smooth. It also has steplessly variable intake and exhaust valve timing. BMW claims the 3781-lb. 645Ci gets 60 mph in 5.5 seconds, making it quicker than a Mercedes-Benz CLK 500, even though the power doesn’t make the 6 seem as breath-holding quick as, say, a Mercedes-Benz SL600.
The unit-body 645Ci has a lot of aluminum under the skin, including in the front and rear subframes, front struts, and multilink rear suspensions. The bonnet and doors are similarly made of the lightweight metal, although BMW opted to use plastic for the front fenders and trunklid. Due in part to the fact that run-flat tires eliminate the need for a spare, the trunk itself is enormous. The automobile has a fantastic 52/48 weight distribution thanks to the battery under the trunk.
The exterior style of the 645Ci, which combines Z4 and 5 and 7 Series sedan elements with certain convex and concave surfaces, divides opinion. It draws attention, and its sculpted form is more appealing in person than in photographs.
Nothing contentious is contained there. With its double-binnacle dash and oversized analog gauges, this vehicle has an elegant and beautiful appearance. The thick-rimmed steering wheel is reach- and height-adjustable, and the iDrive system clears the dashboard of cluttering switches. When the front seats are all the way back, the leg room in the back is virtually nonexistent. Therefore, BMW’s new 645Ci is more of a personal luxury coupe than a 2+2 that can transport passengers, and because it is loaded with the newest technologies, it easily cruises Interstate miles. However, it responds boldly with strong brakes, quick steering, an almost unsettling lack of body roll, and an abundance of grip when the road begins to turn.
The BMW 640i is quick.
The 640i’s reasonable power and all-wheel drive grip allow it to reach 62 mph in 5.3 seconds, which is one second faster than the previous 535i GT but 0.5 seconds slower than a 540i. The 640 can go no faster than 155 mph.
Is the BMW 650i trustworthy?
Breakdown of the BMW 650i Reliability Rating. The BMW 650i has a 2.0 out of 5.0 reliability rating, which places it 24th out of 30 luxury full-size automobiles. Its bad ownership expenses result from the $1,012 average yearly repair cost.
A BMW 645Ci belongs to what series?
The BMW 6 Series is the only true grand touring vehicle in the lineup. Also available are coupe and convertible variations. The 645Ci coupe and convertible are essentially two different body styles for the same vehicle.
A 2004 BMW 645ci’s top speed?
This BMW can accelerate from 0 to 60 mph in 4.8 seconds, 0 to 100 km/h in 5 seconds, 0 to 160 km/h (100 mph) in 11.7 seconds, 0 to 200 km/h (124 mph) in 19.3 seconds, and the quarter mile drag time is 13.4 seconds, according to ProfessCarsTM estimates.
What distinguishes the BMW 645Ci and 650i?
BMW’s 6-series has two high-performance vehicles: the 645i and 650i. Both of them are renowned for their powerful engines, sophisticated designs, and hefty price tags. The age of the 650i and the 645i is the primary distinction between them. The 650i began production in 2006 and continued through the 2012 model that was unveiled this year, however the 645i is an older model that was manufactured in 2004 and 2005. The 650i’s several updates indicate that its features have improved over time, as was to be expected.
The engine’s power is the only factor that customers would likely consider. The 4.4-liter engine in the 645i can produce about 333 horsepower. The 4.8 liter engine that powered the 650i at launch was bigger and had a higher output of 360 horsepower. With the most recent model, however, BMW was able to reduce the engine’s volume to to 4.4 liters while increasing its output to 400 horsepower.
The two have various gearbox options. Both an automatic and a manual transmission are offered for the 645i. The 6-speed manual transmission has only been available on the 650i. Therefore, people who cannot drive a stick should not apply for the 650i.
Last but not least, BMW debuted Brake Energy Regeneration technology with the 650i, which is absent from the 645i. This is comparable to how an electric vehicle recharges its battery and recovers some energy. With the 650i, the idea remains the same. It captures a portion of the kinetic energy of the vehicle, transforms it into electricity, and then uses that electricity to recharge the battery. The 650i can turn off the generator after the battery is fully charged. This results in less engine stress and lower fuel usage during typical driving. However, this equates to more power going to the wheels for faster acceleration when you want to drive aggressively and push your vehicle to its maximum capacity.
Overall, the 650i is the superior car between the two, regardless of cost. It is the more attractive of the two and has greater power and fuel efficiency.
Summary:
3.The 650i is exclusively available with a manual transmission, in contrast to the 645i’s automatic and manual options.
4. The 645i lacks Brake Energy Regeneration technology, although the 650i does.
Which engine powers a 2005 BMW 645ci?
Engine: 4.4-liter V-8 producing 330 foot-pounds of torque at 3,600 rpm and 325 horsepower at 6,100 revolutions per minute. EPA fuel economy is 26 mpg on the freeway and 18 mpg in the city. Six-speed automatic transmission with clutchless manual shifting. Power rack and pinion steering with a speed-sensitive function
Who created the BMW 6?
The “BMW Concept 6 Series” coupe concept car was the first version of the new 6 Series to be displayed at the 2010 Paris Motor Show. Nader Faghihzadeh created the exterior, and Christian Bauer the inside.
Unusual for BMW, the convertible’s production version debuted ahead of the coupe. The coupe was unveiled in April at the Shanghai Auto Show and the New York Auto Show, while the convertible made its official debut in January at the 2011 North American International Auto Show. The 2012 New York Auto Show saw the debut of the Gran Coupe.
The 640i and 650i were the first models, and additional versions such the 640d and 650i xDrive were added to the portfolio. The model range’s kerb weight is between 1,715 and 1,985 kg (3,781-4,376 lb). [Reference needed]
What kind of motor powers the BMW 6 Series?
The 6-series is the largest convertible model offered by BMW, and it embodies the spirit of classy, open-top grand touring in a very contemporary way. The 3.0-liter inline-six (640i) and 4.4-liter V-8 (650i) engines each produce 315 or 445 horsepower, respectively, and pair with an eight-speed automatic transmission in the 6-series. All-wheel drive is an option for all-weather capability, but rear-wheel drive is the default. In addition, a M Sport option is available with even more luxurious interior and external details for further glitz.
What distinguishes a BMW 640i from a 650i?
A 3.0-liter, six-cylinder turbocharged engine with 315 horsepower powers the 2016 BMW 640i. The 4.4-liter twin-turbo V8 in the 650i generates 445 horsepower. The basic automatic transmission is an eight-speed unit. EPA estimates for the 640i are 20/31 mpg city/highway, which is respectable for the class.
Has BMW discontinued the 6 Series?
The third generation BMW F06/F12/F13 6 Series was marketed from 2011 to 2018. A 4-door sedan (F06 model code), a 2-door convertible (F12 model code), and a 2-door coupe are the available body types (F13 model code, marketed as “Gran Coupe”).
It made its debut at the 2011 New York and Shanghai auto shows. At the 2012 Geneva Motor Show, a new four-door coupe variant of the BMW 6 Series was unveiled. It is based on the CS Concept from 2007. Initial models came with three different engines: a 3.0-liter inline six, a 4.4-liter V8, and a 3.0-liter inline six diesel. Later on, all-wheel drive vehicles were added to the lineup.
The 6 Series had a facelift in 2015 that included minor performance and fuel economy enhancements as well as design tweaks. The 6 Series coupe variant’s discontinuation as a production vehicle was confirmed in February 2017. The Gran Coupe and Convertible both terminated in October 2018, respectively. The F06 Gran Coupe is still in production for the 2019 model year even though production halted in the fall of 2018.
The S63 twin-turbo V8 engine and 7-speed dual clutch transmission power the F06/F12/F13 M6. It uses a turbocharged engine for the first time in an M6.