Elite Dealer

1956 Cadillac Eldorado

Mundelein, Illinois

$209,750

Video

Vehicle Details

Make

Cadillac

Model

Eldorado

Year

1956

Mileage

77,435 miles

VIN

5662092027

Body Type

Convertible

Transmission

Automatic

Engine

365

Description

**For Sale: 1956 Cadillac Eldorado Biarritz Convertible - Dual Quad at North Shore Classics**

Step into a world of classic elegance and timeless design with this stunning 1956 Cadillac Eldorado Biarritz Convertible, now available at North Shore Classics. This exquisite vehicle is a true testament to the golden age of American automotive engineering, offering a blend of luxury, performance, and style that is simply unmatched.

**Exterior and Paint:**
The exterior of this Eldorado Biarritz is a sight to behold, finished in a rich Burgundy/Maroon paint that exudes sophistication and class. The sleek lines and iconic tailfins of the 1956 model are beautifully accentuated by this deep, lustrous color, making it a standout piece in any collection or on any road.

**Interior:**
Step inside to find a lavish interior adorned in vibrant Red upholstery. The cabin is a perfect blend of comfort and style, offering a spacious and inviting environment for both driver and passengers. The attention to detail is evident throughout, from the finely crafted dashboard to the plush seating, ensuring a luxurious driving experience.

**Performance and Mechanics:**
Under the hood lies a powerful 365 cubic inch engine, a hallmark of Cadillac's commitment to performance and reliability. This Eldorado Biarritz has been meticulously maintained and upgraded to ensure it runs and drives fantastically. Recent mechanical enhancements include:

- New tires for a smooth and stable ride
- A new battery for reliable starts
- All new fuel lines for optimal fuel delivery
- A new convertible top for open-air cruising
- Front disk brake conversion for improved stopping power
- A new power booster and radiator for enhanced performance
- A completely rebuilt instrument cluster panel for accurate readings
- New exhaust system for a refined engine note

**Power Features:**
This Cadillac is equipped with an array of power features that were ahead of its time, including power brakes, power steering, power windows, and a power top with all new hydraulic pump and lines. These features not only add to the convenience and ease of driving but also highlight the advanced engineering of the era.

**Recent Investments:**
Thousands of dollars have been recently invested in the mechanical aspects of this vehicle, ensuring it is in top condition and ready for the road. The extensive work done on this car guarantees that it not only looks fantastic but also performs exceptionally well.

**Special Features:**
As an exotic class car, the 1956 Cadillac Eldorado Biarritz Convertible is a rare and highly sought-after model. Its dual quad carburetor setup is a distinctive feature that enhances its performance and makes it a prized possession for collectors and enthusiasts alike.

This 1956 Cadillac Eldorado Biarritz Convertible is more than just a car; it is a piece of automotive history, a symbol of luxury, and a testament to the craftsmanship of a bygone era. Don't miss the opportunity to own this exceptional vehicle. Visit North Shore Classics today to experience the elegance and performance of this iconic Cadillac for yourself.

Classic Cadillac Eldorado Buyer's Guide

Full guide

Sarah Whitfield

Pre-War Classics

1953–2002

~5 min read

Updated Apr 2026

Definitive buyer's guide for classic Cadillac Eldorado 1953-2002. Generation breakdown, fin-era cars, front-wheel-drive variants, current market pricing for survivors and concours examples.

This guide covers

✓ 10-point inspection checklist

✓ Common issues & what to avoid

✓ In-person inspection guide

✓ Market pricing by year & condition

✓ 5 FAQs answered

✓ History & fun facts

Read the Full Eldorado Buyer's Guide

Cadillac Eldorado Market Overview

Based on 51 Cadillac Eldorado listings currently on ClassicCarsArena.com

Listed Now

$26,426

Avg. Asking Price

1954–1999

Year Range

Price Position on Our Site - Above Average

This car: $209,750

Low: $4,500 High: $209,750

Transmission Distribution

Automatic 80% ◄

Manual 2%

Condition Distribution

Excellent 16%

Good 14%

Fair 4%

Poor 2%

Data from ClassicCarsArena.com listings Browse all 51 listings →

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Classic Cadillac Eldorado Buyer's Guide

The Cadillac Eldorado launched in 1953 as the marque's halo convertible: Cadillac's response to the new Chevrolet Corvette in concept, but positioned at the absolute top of the General Motors range. Across nearly fifty years of production, the Eldorado defined American luxury motoring through multiple distinct eras: the hand-built 1957-1958 Brougham (704 built across two model years: 400 in 1957 and 304 in 1958), the iconic 1959 Biarritz convertible with its dramatic tail fins, the front-wheel-drive 1967-1992 personal-luxury cars sharing platform with the Oldsmobile Toronado, and the final-generation 1992-2002 cars that closed the Eldorado nameplate. From a concours judging perspective, documented Eldorado examples consistently outperform the broader Cadillac market, the Eldorado was always the marque's flagship and the Cadillac Heritage records confirm it.

What to Check Before Buying

✓

Verify body style code on firewall dataplate , Eldorado was Cadillac's top trim across multiple body styles. Verify original equipment.

✓

Cross-reference VIN engine code with block casting , Cadillac 365 (1957-1958), 390 (1959-1962), 429 (1964-1967), 472 (1968-1974), 500 (1970-1976) each have specific casting numbers.

✓

Inspect frame at body mount points , Body mount bushings collapse over 60+ years. Frame rust here = $2,500-$5,500 minimum repair.

✓

Magnet test rear quarters and lower fenders , Body filler is non-magnetic. Driver-quality cars universally have filler.

✓

For 1957-1958 Brougham claims, demand specialist authentication , Hand-built Brougham (704 total across two model years: 400 in 1957, 304 in 1958) is the most desirable variant. Specialist verification mandatory.

✓

Check FWD drivetrain (1967-1992) , 1967+ Eldorados use front-wheel-drive. Test for chain noise, axle whine, smooth shifting.

✓

Examine convertible top mechanism , Hydraulic and electric top systems on convertible Eldorados commonly fail. $1,500-$3,500 to repair properly.

✓

Verify all power options , Power windows, power seats, climate control, AM/FM. Heavily-optioned Eldorados require expensive specialist repair when systems fail.

✓

Check vacuum-actuated headlight covers (1967-1973) , Vacuum lines crack at 50+ years. Hidden headlights drop at speed when vacuum fails.

✓

Compression test all eight cylinders , Should read 145-180 PSI uniformly across V8s. 472 and 500 big-blocks run slightly higher.

Common Issues

Eldorado rust patterns vary dramatically by generation. The 1953-1966 body-on-frame cars rust at the lower rear quarters, the rocker panels, the floor pans, the trunk pan, the lower fenders, and the cowl seam. The 1967-1992 front-wheel-drive cars use unibody construction and rust at the rocker panels, the floor pans, the front strut towers, and the rear quarter panels. Convertibles add structural concerns at the rear corners where the top mechanism mounts. Mechanically, Cadillac V8 engines are exceptionally durable when maintained. The 365 (1957-1958), 390 (1959-1962), 429 (1964-1967), 472 (1968-1974), and 500 (1970-1976) V8s commonly exceed 200,000 miles with proper service. Common issues include leaky valve covers and oil pan gaskets, worn timing chain on tired engines, and tired Quadrajet carburetors. The 472 and 500 big-blocks are exceptionally torquey but heavy, broken motor mounts are a known issue on hard-launched cars. The 1967-1992 front-wheel-drive drivetrain is the major concern unique to this Eldorado generation. Cadillac developed a unique Turbo Hydra-Matic 425 transmission with a chain-drive transfer case routing power to the front differential. The chain wears and stretches over time, and replacement requires significant labor. Worn chain symptoms include noise on light acceleration, harsh shifting under load, and eventual transmission failure if not addressed. Electrical issues are extensive on heavily-optioned Eldorados. Power windows, power seats, climate control, and AM/FM stereo were standard equipment. Failed systems on heavily-optioned cars require expensive specialist repair, budget $2,000-$5,000 for proper electrical refresh on any neglected Eldorado. Vacuum-actuated headlight covers (1967-1973) commonly fail when vacuum lines crack with age.

What to Look For

Cadillac Heritage records are the gold-standard verification for any Eldorado priced over $40,000. The Cadillac Heritage Center maintains original production records and can verify chassis number, engine number, original paint code, original interior code, options, and delivery destination. For 1957-1958 Brougham claims, the Eldorado Brougham registry maintains additional authentication standards. Without proper documentation, treat all Brougham claims as unverified until proven through Cadillac Heritage and the marque registry. For body-on-frame Eldorados (1953-1966), inspect the perimeter frame at the body mount points and the front kick-up. Body mount bushings collapse over 60+ years and water pools above them, rotting the frame from inside the boxed sections. Replacement is $2,500-$5,500 per side if needed. For front-wheel-drive Eldorados (1967-1992), inspect the unibody at the rocker panels, floor pans, and cowl seam. Test the chain-drive transfer case for noise on light acceleration. Worn chain replacement is a major drivetrain job, $4,000-$8,000 in parts and labor depending on year and configuration. Body style verification is essential. The 1957-1958 Brougham (hand-built four-door hardtop with stainless-steel roof) is dramatically different from the standard Eldorado convertible of the same era. Verify the body style code on the firewall dataplate. Specialty body styles command significant premium pricing, particularly the Brougham, the 1959 Biarritz convertible, and the 1976 final-year convertible. Convertible top inspection is the second non-negotiable for convertible Eldorados. The hydraulic and electric top systems are complex and commonly fail. Test the top operation through full open and close cycle. Failed top systems require $1,500-$3,500 in specialist repair. Document the car. Photograph every panel, every chassis number stamping, every interior detail. The unrestored survivor in original livery is consistently preferable to the freshly-restored car of unknown provenance from a concours judging perspective.

Price Guide

1953-1958 first-era Eldorados are the most desirable. Driver-quality 1953-1956 convertibles run $45,000-$85,000. Documented 1957-1958 Brougham four-door hardtops: $200,000-$500,000+ depending on condition and originality. The 1958 Brougham (with the rare gold-anodized exterior trim option) approaches $700,000+ for documented examples. 1959-1966 fin-era Eldorados: driver-quality 1959 Biarritz convertibles run $55,000-$120,000. The 1959-1960 cars (with the largest fins) command 15-25% premium over equivalent 1961-1966 cars. Documented original-paint, low-mileage 1959 Biarritz cars: $130,000-$220,000+. 1967-1970 first-generation FWD Eldorados: driver-quality cars run $22,000-$45,000. The 1967-1968 cars are the most desirable years of this generation. Documented original-paint cars: $40,000-$70,000. 1971-1978 large FWD Eldorados: driver-quality cars run $14,000-$28,000. The 1976 Eldorado convertible (marketed as "the last American convertible") commands premium, driver-quality 1976 convertibles: $25,000-$45,000, documented original-paint examples: $35,000-$75,000+. 1979-1985 downsized Eldorados: driver-quality cars run $8,000-$18,000. The 1984-1985 Eldorado Biarritz convertibles (the rare convertible-revival cars) command $12,000-$25,000. 1986-2002 modern-era Eldorados: driver-quality cars run $5,000-$15,000. These represent the bargain entry into Eldorado ownership. Project Eldorados start around $5,000-$15,000 across most generations. Brougham project cars are the exception, even rough Broughams command $50,000+ due to their rarity. Restoration costs are higher than equivalent Chevrolet restoration due to specialty Cadillac parts and trim.

Did You Know?

The 1953 Eldorado was launched as Cadillac's halo convertible at the same New York Motorama auto show that introduced the Chevrolet Corvette. Cadillac positioned the Eldorado at the absolute top of the General Motors range, sticker price was $7,750 in 1953, more than twice the price of the standard Cadillac convertible. Only 532 1953 Eldorados were built, making them among the rarest production Cadillacs of the era. The 1957-1958 Eldorado Brougham was Cadillac's response to the European luxury market, particularly the post-war Mercedes-Benz 300 series and Rolls-Royce Silver Cloud. Built by hand at Cadillac's Detroit plant, the Brougham featured features unique in 1957-1958 American production: quad headlights (Cadillac's first), brushed-stainless-steel roof, individual memory front seats, and self-leveling air suspension. The Brougham's air suspension proved unreliable in service and was dropped from production after 1958. The 1976 Eldorado convertible was marketed as "the last American convertible": Cadillac's response to expected federal rollover safety regulations that were widely predicted to ban open-roof passenger cars. The regulations never materialized, but the marketing campaign drove dramatic price speculation: some 1976 Eldorado convertibles sold for $20,000+ over MSRP, and surviving examples in original condition continue to appreciate. Convertible American passenger cars eventually returned for the 1982 Chrysler LeBaron and 1984 Cadillac Eldorado Biarritz.