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V12s

flat6buster

Active Member
Joined
Sep 8, 2009
Messages
608
Location
Spain
Car
W222 S350, 911sc
So one hears horror stories of the V12s, but which of them are bad news?
I've heard the cylinder deactivation enabled ones are a pain and also that V12s eat coil packs at £1500 per side for a past-time.

Is this all of them? Or just W140s. Or just W220s. Are the BiTurbo W220s more or less reliable?

I've loved my v8 mercs and before I buy another I just wonder if I should cross off a V12.

A sneaky admission, I'm liking the 1980s Jaguar XJ series 3 at the moment too (although I suspect this will break down more than it will work!).
 
I too am very tempted by a V12 model, and I have in the past owned 3 V12 Jaguars, 2 at 5.3, and one 6.0. the series 3 in Daimler Double Six guise is a beauty.......but overheating caused by warped cylinder heads and knackered cooling systems is a big issue with these cars. My last XJS was a 6.0V12, one of the last produced, had loads of grief with overheating...they are lovely cars, but I think a V12 MB is a much better prospect. In essence the V12 Jaguars had been in production since abt 1972, and barring the addition of fuel injection, and increased capacity to 6 litres in 1993, it hadn't altered much
 
Yeah I think a series 3 would be a nice wafty Sunday so no problem if/when it breaks but I don't think I would want to rely on one as a daily driver...

The biturbo V12 in a W or C 220 must be a hoot and I imagine trans-european trips would be just awesome.
 
yes, the S600 in W220 form, and the CL600 W215, are both available at reasonable prices these days, and there is always the S65 too, with abt 603bhp in stock. Thing is, there is a massive difference in price for one of those, and for wafting around on a Sunday, you just don't need all that power. An S600/CL600 would be a great spec anyway, and certainly put a smile on the face I think :)
 
Don't know if this will help ....

I bought a 2003 CL600 W215 TT a year ago. Only 50K miles now with full MBSH. I paid 8K, so had a reserve of €4K. Had quite a few niggles, as the car had had little recent use.

Wing mirrors needed sorting (easy fix), indicator erratic (now sorted). some spots of paint blistering (will live with), occasional flat battery (my fault!) Needed 4 new tyres - to be put on soon!

Pros: awesome performance, luxurious cabin and room for 4 six-footers. averaging 27mpg! Great road presence, yet classy. Easy to park for its size. Gives a great feeling of capability. Servicing is not bad here in France. Once on the move, feels unbeatable.

Cons: the niggles ....... aircon sometimes won't come on for about 10-15 mins on very hot days - just when you want it to. Occasionally the engine check light comes on and the codes show one bank misfiring - perhaps plugs, coil pack or control module. Fuel pump is noisy - always has been! Some what feels like axle tramp under hard acceleration - could be prop bearing, could just be well-worn tyres!

I don't have an Indie near me, so the niggles will need sorting gradually. Coil packs & plugs will cost just over £2000 if needs be. Bodywork about £500. Gearbox oil needs changing on these at around 60K and I've had that done at the recent service, as a precaution (it's the same box as in my XKR).

Overall? Absolutely brilliant - am keeping it. Wife loves it (hates the XKR) but is becoming frustrated about the aircon niggles.

Interestingly, the petrolheads over here are unanimous that the shape is the best Merc ever and is a classic in waiting.

I have 2 other cars, so the niggles don't concern me on a daily basis.

I'm looking for a classic investment, however, and the discussion about the Jag V12s is interesting, as I fancy an XJ12 or Daimler Double Six. Like my XKR, they get through suspension bushes and sometimes components at a fair rate, but I've become addicted to the lazy power and sound of a V12. The Jag series III are not too bad - the series II is the one to avoid, from my research.

Willson reckons the early '90s 500sl is a sleeper and there are a couple of apparent good ones out there at the moment, so another V8 may be a possibility and less of a liability.

Back to topic ........ go for the twin-turbo V12, 2003 onwards. Have a reserve budget as things can and do go wrong - I haven't mentioned the suspension yet - and be phlegmatic about niggles on what is a truly awesome car.

You're getting a £110K car for under £10K ........ but with the same maintenance costs.

Everyone should own a V12 at some time in their life!

Good luck with whatever decision you go for.

Stuart
 
Everyone should own a V12 at some time in their life!

Words to live by! Buy the V12 and worry about it later...you only live once. I don't think you'll lie on your death bed and think "I wish I never bought that V12"...buy you might think the opposite if you bottle it!

Never had a V12 by the way...its on the bucket list though. CL600 looks like a great choice.
 
I considered an S65 and passed on it after doing some research on how unusable the power is, I might have made a mistake by not buying it but I do have a BMW 760li E66 Facelift and that runs the V12 and has been faultless.

It's still covered under BMW warranty and it's only done around 50k

The smoothness of a V12 is something else
 
Have had many W140 S600s, the engine is very robust and only costly weakness can be the wiring loom on some years.

The early W220 S600 isn't worth it, performance isn't much better than the 500 and the 500 is massively reliable, the early 600 with cylinder deactivation does seem to fare worse than the facelift twin turbo car but not massively worse.

The facelift turbo V12 is a special car that can be bought for relative peanuts. We have 2 in the garage right now, truth be told, one is a donor car.

We also have a 216 CL600 and the engine related bills don't seem to be as bad as the 215/220 so although the engine is fundamentally the same MB must have made quite a few revisions.

The driving experience is very special and unlike almost any car on the road. The low end torque is unbelievable but yet still so smooth and effortless. The way it delivers power is similar in character to the supercharged 55 AMG V8s, but not as rough as those powerplants and despite what the official figures or anyone claims, the V12s are a faster car in a straight line than the supercharged AMG V8s.

Ownership of one should really be on everyone's bucket list.
 

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