Vintage Autocar Road Test: 1964 Cadillac Coupe De Ville – “Somewhat Costly Motoring One-Upmanship”

Scanned image of a B&W front 3q view of a 1964 Cadillac Coupe de Ville with the words "Autocar road test 1986" above it and "Cadillac Coupé de Ville 7,030 c.c." below

To British and European eyes, big American cars were rare and exotic iron, offering a combination of gargantuan dimensions, enormous displacement, and indulgent power that nothing on the other side of the Atlantic could match. In 1964, the British magazine Autocar tested a new 1964 Cadillac Coupe de Ville, greeting it with a mixture of respect and a lingering trace of awe.

This review falls into a category of vintage road tests that we could call “polite gawking.” You could buy a new Cadillac in the UK in the 1960s, but very, very few Britons could afford such a thing, and demand was small enough that the importers didn’t bother contriving a right-hand-drive conversion. No one reading Autocar in 1964, even industrial potentates like JCB founder Joseph Cyril Bamford (from whom the editors borrowed the test car), was looking to cross-shop a Coupe de Ville with a Humber Super Snipe or Daimler Majestic Major. On the other hand, almost no one reading American car magazines like Car and Driver or Motor Trend was really in a position to afford a new exotic sports car, which hasn’t stopped those from being cover-bait for decades — fantasy beats reality nine times out of ten.

Autocar, week ending 7 August 1964, bottom half of p. 266, the first page of their Cadillac Coupe de Ville road test, with text box with British prices, and comparison graphs of performance

The irrelevance of the Coupe de Ville to most British readers was emphasized by the price: £4,123 17s 3d in pre-decimal currency. At the time, the exchange rate of the USD to GBP was fixed at $2.80, so the British price was equivalent to a dizzying $11,547, or around 60 percent more than this identical car would have listed for in the U.S. — the consequence of international shipping, import duty, and UK purchase tax that was almost as punishing as the cost of feeding this beast on pricey British super-premium fuel. To put this price in perspective, the popular Ford Cortina 1500GT, which was considered a middle-class family sedan in Britain, listed for about £800 ($2,240) in four-door form.

Front 3q view of an Aspen White 1964 Cadillac Coupe de Ville with its headlights on

1964 Cadillac Coupe de Ville / Bring a Trailer

 

At such lofty prices, the Cadillac invited comparisons with some local luxury models that offered a higher standard of Olde World craftsmanship. Autocar conceded:

While the detail body finish, inside and out, is not so meticulous as one expects of European equivalents, and under its bonnet the Cadillac really looks no neater nor better arranged than less pretentious American cars with big vee-8 engines, this must be related to its retail price which, in this country and with a stiff import duty included, is still far below what must be paid for the classiest home produce. Moreover, as a dynamic object it represents the highest standards attainable today in most important respects, as well as having several luxuries incorporated, or available as extras, that cannot yet be had at any price on European cars.

As expensive as this Cadillac was in the UK, it was not in Rolls-Royce territory: The Rolls-Royce Silver Cloud III Autocar had tested a year earlier cost £5,964 18s 0d ($16,701) with air conditioning and electric windows.

Autocar, week ending 7 August 1964, p. 267, with Cadillac Coupe de Ville performance results and a chart of major control locations on the dashboard

The 1964 Coupe de Ville had a new powertrain. For 1963, the familiar Cadillac 390 cu. in. (6,384 cc) V-8 had gotten a new shorter, lighter block; for 1964, it had been bored and stroked to 429 cu. in. (7,008 cc), boosting gross output by 15 hp and a whopping 50 lb-ft of torque. On the 1964 De Ville and Sixty Special, this was paired with the new Turbo Hydra-Matic transmission, giving much smoother shifts and better off-the-line performance. Motor Trend‘s test of a 1964 Sedan de Ville had managed 0 to 60 mph in just 8.5 seconds and the quarter mile in 16.8 seconds. While Autocar didn’t match the 0 to 60 mph time (their test car was after all borrowed from a wealthy private owner, so they might have been reticent about experimenting with drag strip-type staging techniques), their quarter mile ET was just 0.2 seconds off, and they managed an even higher top speed: a two-way average of 121.5 mph, to the 115 mph recorded in the MT test.

This kind of performance needed no apologies in the UK in 1964. The aforementioned Silver Cloud III, with a 380 cu. in. (6,230 cc) all-aluminum V-8 and the license-built version of GM’s older Dual-Range Hydra-Matic, was 1.1 seconds slower to 60 mph, 0.7 seconds slower through the quarter mile, and 5.7 mph slower flat out. About the only big British luxury car that could run with the Cadillac was the Jaguar Mark X, and then only with manual transmission. The Coupe de Ville was a match for a fair number of contemporary sports cars as well, at least in a straight line.

Dashboard of a 1964 Cadillac Coupe de Ville

Attractively detailed, and far less plasticky than Cadillacs would become not too many years later / Bring a Trailer

 

As expected of an American luxury car, the Cadillac featured an assortment of gadgets and warning lamps seldom seen on British cars of the time, including the new Twilight Sentinel automatic headlight control system, but the true wonder was the Coupe de Ville’s fully automatic heating/air conditioning system (which Tom Halter has described in detail). Observed Autocar:

But of all the Cadillac’s contributions to motoring ease and well-being, the latest form of air-conditioning is surely the most outstanding. Called Comfort Control, it demands only that the driver selects an appropriate temperature on a small dial and slides a quadrant lever to Automatic, and a sensitive, all-electronic thermostatic device maintains that temperature, whatever the conditions outside. Indeed, one could set this where required on taking delivery of the car, and never need to fiddle with it thereafter.

Well into the 1980s, air conditioning was far from universal even on very high-end British and European cars, and as owners in hotter climates can attest, its power and sophistication often left much to be desired. For 1964, fully automated Comfort Control system was a dazzling luxury.

Closeup of the Comfort Control air conditioning panel in a 1964 Cadillac Coupe de Ville

Comfort Control Air Conditioning and Heating System was a new Cadillac option for 1964, listing for $495 in the U.S. / Bring a Trailer

 

Autocar, week ending 7 August 1964, p. 268, with B&W photos above and below the text of the interior and trunk of a 1964 Cadillac Coupe de Ville

As the first page mentioned, the last Cadillac Autocar had driven was a 1961 Series 75, whose size made it rather like driving a parade float. The Coupe de Ville was still enormous — four and a half feet longer than a Ford Cortina — but the editors found it relatively easy to manage:

While some of the larger American cars are still somewhat unwieldy and not much fun to drive on British roads, memory of the giant Cadillac limousine tested in 1961 was still sufficiently fresh to remove any qualms about handling this considerably smaller 1964 coupé. Of course, it felt enormous at first, after stepping straight from a small British saloon, but the outward visibility is practically panoramic through the deep windows and over the boot and bonnet, which are so low that the road surface can be seen within a yard or two of the car.

 

Front seat of a 1964 Cadillac Coupe de Ville with black and white cloth upholstery, viewed through the driver's door

Like the Autocar tester, this Coupe de Ville has cloth-and-leather upholstery / Bring a Trailer

 

Interior comfort went almost without saying:

Electric controls shift the bench front seat (with divided backrest) to and fro, and raise, lower or tilt it. These ready adjustments, together with the variable steering-wheel rake, should enable almost any driver to combine an easy, relaxed posture with a proper field of vision. On a long run the ability to change one’s driving position slightly from time to time helps combat fatigue and cramp; ideally, the Cadillac could do with one more adjustment—for varying the backrest angle relative to the cushion, to exercise the spine. The seats are very comfortably shaped and sprung, trimmed in an attractive cloth weave with leather panels, and provided with centre folding armrests front and rear. There is plenty of legroom behind, and easy room for three abreast.

 

Trunk compartment of an Aspen White 1964 Cadillac Coupe de Ville

Lots of room, but Autocar feared that getting at the spare tire (towards the front of the compartment) “would represent quite a problem” / Bring a Trailer

Autocar, week ending 7 August 1964, p. 269, showing B&W photos above and below the text of the rear 3q and engine of a 1964 Cadillac Coupe de Ville

Given the ample power, the editors were thoroughly impressed with how effortlessly it was delivered:

From cold start to hot stop the big vee-8 engine is a paragon of unobtrusiveness, with a surge of instant power always in reserve. One comes to regard it as an almost silent source of energy, like electricity, that one can switch on or off and regulate at will. It seems scarcely conceivable that some 340 b.h.p. are being developed beneath the bonnet by such violent means as internal combustion. … In top this car can exceed 120 m.p.h., still with very little mechanical fuss or other disturbance.

With air conditioning, a 1964 Cadillac had a 3.21 axle rather than the standard 2.94, giving sharper acceleration and gearing that was a tad busy compared to Cadillacs of later eras: about 23.5 mph per 1,000 rpm, compared to a sleepy 35.8 mph/1,000 rpm for the 1979 Eldorado. It wasn’t really noticeable except when watching the fuel gauge, where the cost of all that seamless power became all too clear.

Rear 3q view of an Aspen White 1964 Cadillac Coupe de Ville

Big, but relatively graceful and effortlessly powerful / Bring a Trailer

 

Autocar explained:

At our overall figure of 10-9 m.p.g. on super premium fuel the Cadillac de Ville covers only 40 miles or so per pound sterling in this country, which is somewhat costly motoring one-upmanship; it becomes much more logical when the car’s capacity is fully employed. With a 21½-gallon tank capacity the safe touring range is, say, 200 miles when the car is driven hard. Some discretion with the throttle pedal, resisting the temptation to display the car’s accelerative powers at every opportunity, naturally extends this range considerably.

Their mpg figures are Imperial, and translate into a harrowing 9.1 miles per U.S. gallon over 929 test miles. (Motor Trend had averaged “slightly better than 13 mpg” over 2,000 miles with the air conditioning running.) I don’t have average British petrol price stats close at hand, but a fuel cost of £1 ($2.80) per 40 miles would indicate a price of around 64¢ per U.S. gallon, which I think was about twice the average gas price in the States at that time. A very expensive way to travel, and even thirstier than the Silver Cloud III, which had managed only 10.2 miles per U.S. gallon in Autocar hands despite being almost 500 lb lighter and a fair bit less powerful than the Coupe de Ville.

Cadillac 429 engine in a 1964 Cadillac Coupe de Ville

The new-for-1964 429 had 340 gross horsepower and 480 lb-ft of torque / Bring a Trailer

 

Autocar lamented that the Cadillac 429 engine was “a somewhat intimidating spectacle with no aesthetic appeal.” I would have to agree: This was an impressive engine in many respects, compact in size and surprisingly light despite its enormous displacement and output (its dry weight was only 595 lb), but to look at it, it was just another big V-8 lump. You can tell that nobody at Cadillac since the early ’30s had given much thought to the idea that someone might want to pop the hood just to show off the machinery. A pity, even at lower American prices.

Autocar, week ending 7 August 1964, p. 270, concluding text of Cadillac Coupe de Ville road test with major mechanical specifications and line drawings illustrating the major dimensions

Autocar was surprisingly complimentary about the Coupe de Ville’s road manners:

It has been said often before that when it comes to driving them the best big cars feel much smaller than they appear. This is certainly true of the Cadillac, a major contributor being the power-assisted steering. This combines the virtue of requiring very little physical effort despite relatively high gearing by American standards (3.8 turns of the wheel lock to lock), with outstanding precision and sensitivity. There is no perceptible lag in response, particularly for self-centring, and the car is extremely stable at high speeds, being scarcely affected by side gusts. It is much less of an embarrassment than one might expect in average country lanes; if they are very narrow, however, one must be prepared to stop instantly, due to the car’s width.

However, they had some reservations about the ride:

On normal roads the low-rate suspension is very soft and comfortable, while providing excellent stability for rapid cornering, without heeling over much. It provides the essentially “boulevard ride” expected of this type of car, which is not at its best over rough stuff. Once or twice it was “caught out” by a succession of waves or bumps on a public road, bad ones causing quite a build-up of pitch and wallow. Nor was it any too happy over the washboard and pavé surfaces at the MIRA proving grounds, but these are special circumstances that cannot take precedence over the car’s usual habitat, where it would be difficult to better for restful motoring.

 

Side view of an Aspen White 1964 Cadillac Coupe de Ville

1964 Cadillac Coupe de Ville was 223.5 inches long on a 129.5-inch wheelbase / Bring a Trailer

 

The editors reserved their harshest criticism for the brakes, which they found easily overtaxed, remarking:

If the U.S. manufacturers were faced with our road conditions, coupled with the general freedom from speed limits outside built-up areas, no doubt they would provide their cars with brakes to suit. As it is, these are still the weakest feature and the Cadillac can be acknowledged only as better than most of its compatriots in this respect. One quick stop from maximum speed stretches their capacity to the limit, and fast driving over give-and-take roads can fade them out quickly until one learns to use them as little as possible, holding them ready to meet any sudden emergency.

Looking at the specifications, you can see that Cadillac had really reached the practical limit for drum brakes. The 1964 Cadillac braking system had big finned drums (12 inches by 2.5 inches front and rear), a dual-circuit hydraulic system, and front splash shields (which Autocar found reassuringly effective in preventing the brakes from being washed out temporarily by deep puddles). However, a swept area of 378 square inches was marginal for a 5,000-pound car. It’s too bad Cadillac lagged behind some U.S. rivals in adopting disc brakes; the big four-wheel ventilated discs added to the Corvette for 1965 would have been a great improvement.

Close-up of the right rear fender, fin, and tail lights of an Aspen White 1964 Cadillac Coupe de Ville

Autocar noted, “Since 1959 the famous fins have been clipped down year by year,” but fins they still unarguably were in 1964 / Bring a Trailer

 

Not too many years later, British testers probably couldn’t have resisted making some snide remarks about the Cadillac’s extravagance and perceived engineering shortcomings, but this review contains almost none of the condescension found in the earlier road test of the 1962 Ford Thunderbird by the German magazine Auto, Motor und Sport. Despite their test car’s enormous thirst and mediocre brakes, Autocar came away genuinely impressed, concluding that “behind all the sophisticated gadgets for gracious motoring and the flashing performance of this great car, the hardware’s just as good as ever” — the tail end of the era in which Cadillac really did represent the Standard of the World.

Related Reading

Vintage MT Road Test: 1964 Cadillac Sedan DeVille – The Fastest And Best Classic Cadillac (by Paul N)
Carshow Classic: 1964 Cadillac Sedan DeVille Four Door Hardtop – Every Car Has A Story, But Some Are Just Better Than Others (by Spridget)
The Inflation Adjusted Prices Of New Cadillac Coupe DeVilles (1949-1993) And In Price Per Pound – The True Cost Of A Cadillac Over The Decades (by Paul N)
COAL#2: 1964 Cadillac Convertible (by Jose Delgadillo)
Cold Comfort: The History of Automatic Climate Control (by Tom Halter)