1988 BMW 6 Series 635CSi 3.4L from North America


BMW's ultimate marriage style and performance!


Small electrical glitches (service interval light malfunction, intermittent sunroof and window problems).

Replaced thrust arm bushings and front motor mounts at 213000 km.

Replaced broken a/c cutoff switch and installed a/c upgrade kit at 215000 km.

Clutch shudders when hot - will need replacement within 20,000 km.

General Comments:

Despite above problems, car feels incredibly solid and shows very little wear despite age/mileage.

Smooth running engine is rock solid, consuming no oil between changes.

Drives a bit abruptly in slow, city/stop & go traffic due to somewhat notchy, long-throw gear shift. It's almost sluggish in such driving conditions.

HOWEVER, the car is really in its element under hard acceleration and quick shifting. Very noticeable increase in power output between 3000 and 5000 rpm. A veritable rocket at high speed cruising, the car feels incredible stable at speeds over 160km/h. I have yet to test top speed (and won't go beyond 200km/h without new speed rated rubber).

Would you buy another car from this manufacturer? Yes

Review Date: 2nd September, 2004

1988 BMW 6 Series 635CSiA Catalyst 3.5 from North America


An Unbelievable Sports Coupe!


Air Condition broke in 1996. Front power steering pump bracket rusted off last year.

General Comments:

The 635CSi is an exceptional automobile. Its very powerful, along with a hard-edged, jet-like sounding engine, has impeccable handling and steering characteristics. The interior is beautiful, and the seats are extremely supportive. All of the fine nappa leather is hand stitches with impossibly tidy stitching. I get complements on it all the time, no matter where I go. I will keep it forever, and recommend it to anyone. (if you can keep it up the way it is meant to be kept up..)

Would you buy another car from this manufacturer? Yes

Review Date: 14th March, 2003

1988 BMW 6 Series M6 3.5 24v petrol from UK and Ireland


Beautiful and rapid old beast that still turns heads!


Head gasket blew at 105,000 miles. Repaired quickly and easily by specialist.

Clogged injector - had the whole lot ultrasonically cleaned which must have restored around 40 bhp! The best £100 I have ever spent.

Timing chain started rattling at 102,000 miles. Very expensive replacement needed!

General Comments:

This car looks stunning and with 286 bhp will seriously worry a lot of Porsches, Ferraris and other so-called supercars, whilst sounding every bit as good as any of them. The noise of this M Power 24 valve straight six as it snarls past 5,000 RPM will raise the neck hair of anyone with an ounce of soul. It is also significantly quicker than the standard Sierra Cosworth I had before.

There have been problems, but then no car of this age is going to be troublefree. Servicing it every 4,000 miles (regardless of the silly indicator), using a good independent for servicing and parts, and use of pattern parts for certain jobs keeps the costs and problems to a minimum. Running costs are quite heavy, as the car averages around 23 mpg with a mixture of town and motorway driving. But it's worth it.

Handling is OK. The car is very tail happy in the wet, and tyre choice is limited because of the metric sizes. Having said that, this car is not about back road blasts, but about burbling along gently winding A-roads, and frightening sports cars off the lights. Above all it is about looking and sounding drop dead gorgeous, and at that it really excels.

Would you buy another car from this manufacturer? Yes

Review Date: 17th September, 2002

1988 BMW 6 Series 635CSiA 3.5 Liter In-line six from North America


The number ONE Autobahn Stormer!


Rear air conditioner was replaced in 1996.

Just minor quirks for an older car (no electrical, however)

Overall, the car has treated me great from the first day of ownership.

General Comments:

The car is very enjoyable to drive, even now that it is going on 15 years... I always have a smile a my face when driving it. The 3.5 liter straight-six is still wonderfully powerful, and sounds superb as well. The interior is beautifully designed as well.

Repair, as little as they may be, and extremely expensive... thats my only complaint.

Would you buy another car from this manufacturer? Yes

Review Date: 15th September, 2002

1988 BMW 6 Series 635CSi 3.5 liter inline 6-cylinder from North America


A classic car in the making


Not much has gone wrong with this car. It's definitely cheaper and more reliable than an M6, but of course does not go as fast. However, this car is still faster than any other big coupe on the road.

I do have to get the SRS system checked and get new brake rotors and pads. But other than the usual wear and tear items, the car needs no major repairs.

General Comments:

This car is fast and is fabulous to drive. Driving it absolutely gives me a smile all the time.

Would you buy another car from this manufacturer? Yes

Review Date: 22nd July, 2001

30th Oct 2001, 15:06

The only beautiful BMW in my opinion.

16th Sep 2002, 11:09

I'm 19 years old, and this 1988 635CSi is my first car. I worked by butt off for it, and it is well worth every bit of sacrifice. Not only is it fast as hell, it's beauty helps to turn the heads of all the females who'll now do anything for a ride.

13th Jul 2004, 17:21

I also own a 1985 European M6, with a brand new engine, now with about 4,500 miles on it. I've replaced the entire suspension, struts and tires. After four months of being told I would never find one, I have found one.I agree an M1 would be even better. I've owned many cars. This is the best running high performance GT/style coupe I have ever owned. At about 3,600lbs, incredible torque and power, what a car, what a feeling to pop onto the freeway, and shift out of third gear doing a hundred miles an hour, knowing you have two more gears to go!! What a car!

17th Jan 2008, 22:44

I am considering buying an american-based 1988 M6. It has 40K miles and is for sale locally for USD $18K. All original, no chip upgrades, no paint upgrades, pedigree all-BMW service.

Dilemma: Older limited edition BMW or new hi po American muscle Corvette or newer M-series - possibly late 90's M5..?

Opinions? I am strongly leaning towards M6 for her lines, but performance, is well, lacking.

28th Jan 2008, 17:57

The M6 is without a doubt a better car than the 635CSi. But a good quality 635CSi can be had for $5000 whereas a M6 will run you $15000. I say get the 635CSi and spend the 10 grand on performance upgrades and you'll blow the doors off stock M6s, providing you're not afraid to get a little greasy.

1988 BMW 6 Series 635CSi 3.5 Liter 6-cylinder from North America


A great looker with performance numbers to back it up


Air conditioner broke.

Front end "shimmy" is a serious issue to be looked at soon.

General Comments:

The car is really the best car I have ever owned. It is very fast, and is comfortable to be in. It has hot looks, and is a real drivers car.

Would you buy another car from this manufacturer? Yes

Review Date: 25th May, 2001