Acceleration Battle | BMW 630 Ci vs BMW 645 Ci | E63 vs E63 | 190 vs 245 kW

That 645 on start feels sluggish and almost feels like it lacks power . I have owned 630i and currently own 645ci . I can tell that 630i is a fast car no doubt and masterpiece of 3.0 naturally aspirated engine , but 645 is different ball game . This video doesn’t do justice to 645ci as in reality it is noticeably quicker car . 630 is quick in city , but on highway it doesn’t feel that fast on the other hand highway is where 645ci shines , instant torque and acceleration pretty much at any speeds . Plus the sound is music to the ears .

I have driven both. A 2005 630i with N52B30 and my own 2004 645ci with N62B44. Both with the ZF6 auto. The 630i really is a fast car, but you have to use the revs. Unlike the N52, the N62 has the power from down low and makes it a great all rounder for that, but the extra 500rpm makes the 630i sound more like a sports car. If a 630i pulls earlier in a race, you will need suprisingly alot of road to catch it. With muffler delete, it gives you that M3 vibes haha! Alot of car for the money! The places where the 645ci performance shines is with warm tires. I managed 0-100kph in 5.5sec with on extra passenger and 60% full tank. It also keep pulling alot stronger after 180kmh. To keep the engine happy and alot more reliable, just change thermostat to a colder 90°c one. The OEM 105°c thermostat kills these engines in the long run. For sound, muffler delete makes this car sound alot like the Mercedes-Benz 6.2 AMG engines. That angry muscle car roar! In the end of the day, both cars will make good daily drivers.

nice vid, i was driving around a 640 gran coupe not too long ago, i loved it

hello good job . not huge difference between the 2 the 645 flu at the start ?

Acceleration assistant with SMG The acceleration assistant enables optimized vehicle acceleration at racing car level on road surfaces with good adhesion when starting off. Do not use the acceleration assistant too often, as otherwise components will wear prematurely.< 1. Activate the Dynamic Driving Control. 2. Press the DTC button for longer than three seconds. 3. Press the accelerator pedal down fully: Kick-down. The ideal starting-off engine speed is set. To maintain driving stability, do not deactivate DSC if at all possible.<

thanks for the video..I am looking forward to buying a 645i, but looks a bit slow no ? 635d remap looks so powerful next to the v8 (even if it is not the same driving, sounding pleasure), what do you think about it ? Do you have the feeling that the v8 pushes you in the seat ?

Is that normal running temp on the 645? (100-120'c)

Thnks for vidéo

The 645 smg is shifting like my grandma...

I have driven 645ci, it dousnt feel that fast but it is, it is because it's a very heavy car

If one turbo that 630i and its going to be a reall killer :)

630i is better, cheaper to maintain and more likely to resale.

Small difference for 75 hp

645i is far quicker then a shitty 630, maybe a faulty car or bad driver. believe me, i have one since 4 years

The end of the line is the N53/n52 Engine is the biggest trash of the world btw .... yes maybe its not so slow vor 3000cc okey maybe he have a a nice sound but all other things that realy importet are is TRASH so many mistake in the Engine build are not coincidence. THE V8 the SAME .. i MEAN HOW THE FU TAKE AN WATER PIPE BY THE OIL Container ?????

the 645ci 333bhp, you made a bad start or you hadn't the right tires on the 645, goodyear F1 summer is the right tire for that car.