Opel Value Guide - Opel GT, Opel Manta and Opel Kadett B - Updated Price Guide

1st Official Post
    • Official Post

    OPEL GT Valuation baseline ( UPDATED 07/05/23 )

    ( Note : Documented Survivor. Car all original with minor defects to paint due to respray and battery box repair )

    Values 1969-1973 GT

    • #0 - (Museum Level - Survivor w/ only showroom mileage) : $50,000+
    • #0 - (Museum Level - Restored ) : $45,000+
    • #1 - (Concours Show Level ) : $40,100 - $45,000 - HAGERTY $36,800
    • #1.5 - (Concours Show Level ) : $30,600 - $40,000 - HAGERTY $36,800
    • #2 - (NADA High) : $26,000 - $30,500 - HAGERTY $24,100
    • #2.5 - (NADA High) : $20,500 - $25,750 - HAGERTY $24,100
    • #3 - (NADA Avg) : $14,500 - $20,250 - HAGERTY $13,500
    • #3.5 - (NADA Low) : $8,000 - $14,500
    • #4 - (NADA Low) : $5,100 - $7,950 - HAGERTY $7,300
    • #4.5 - ( Good Body / Bad Mechanicals OR Bad Mechanicals Decent Body ) : $3,900 - $5,000
    • #5 - (Borderline Restorable / Mechanically Runs but Not Safe ) : $2,000 - $3,850
    • #6 - (Parts Car) : $500 - $1,950 ( Depending on the quality of parts & if running or not )
    • #7 - (Barely Scrap) : $500 - $100 ($150 is what the guys that come get cars for scrap will give you..)

    Add:

    • Automatic ( This is debatable.. Those WANTING an Automatic may pay a premium.. those that don't will not )
    • $500-$1500 : 1.1L - With less than 3000 produced between 1969-1970, the 1.1L is rare version which due to rarity could see an increase due to recent interest.
    • 10% - Factory A/C
    • 5% - Early Flat Rear Panel / Split Bumper Early 69 ( Documentable by VIN and/or body stamps )
    • 1968 1/2 GT - Can potentially add value up to a few extra thousand.. if complete and documentable. So far only a handful have been documented


    OPEL GT Valuation - Customs and One-Offs

    • Bring-A-Trailer - 1972 Silver - ( Custom Exterior, Flares, Mazda Turbo, 5 speed ) - #2 - $35,000 ( March 20, 2020 )
    • Bring-A-Trailer - 1971 1.9L White - #3 - $12,500 ( Oct 11, 2023 ) - 2.7L w/ EFI & 5 Speed - Custom Interior and Body

    Turbocharged 1972 Opel GT 5-Speed for sale on BaT Auctions - sold for $35,000 on March 20, 2020 (Lot #29,301) | Bring a Trailer

    From : Determining Opel Values for Opels in the US - Classic Opel Registry - Classicopels.com - Alt-Opel.US

    Can be no initial value can be no higher than a #3 in "value", in this case $17,750

    #3 Condition : $17,750

    Flare and Body Kit ( Professionally Installed ) & Custom Rims : $5000

    Professionally Installed Turbo w/ 5 speed and AC : $10,000


    Custom Leather interior: $5000

    And so on, so while the $35,000 sets a bar, it doesn't overprice the market as the car in question was immaculately done. It's so well done, that it does out value a stock survivor. BUT if a Survivor were restored to this level, it would be worth as much if not more.

    So how to get to this value. The work has to be professional grade on the level of professional restoration. It has to be period correct and/or tasteful in a way that it can be universally admired, and also sticks to the original design as much as possible. Also the overall car from bumper to bumper has to be immaculate.

    True that taste is subjective, but in this case the car is close to stock as it gets and still be a wildly custom car.

    The engine bay looks as close to factory as you would imagine, the undercarriage is immaculate, the interior keeps to the same original factory look, the exterior, looks 90% stock to include the stock mirrors. No big questionable or debatable spoilers or modifications to the nose or rear of the car. The Flares are period correct, and were seen on the Stienmetz GT, and Conrero GT of the era. Paint color is a universally admired silver, with no custom flake or stripes. The Rims fit the overall shape and the flares like they were made for it.


    Does this mean all customs are worth this much..? NO, Absolutely not. Just as few survivors make it to Level 1 or 0, few customs are done to this level. Its the exception and not the rule.

    OPEL Manta Valuation baseline :

    • PRIVATE - Yellow - 1973 Yellow - #2 ( Survivor, Unrestored ) - $11,000
    • PRIVATE - Blue - 1973 Luxus - #3 - $9,100 (October 2020)
    • Dealer - Red - Poor quality paint, painted bumpers - #4 - $9,000 (2020)
    • Mecum - LOT F129 - 1975 White Manta - #1 - $23,100 (2019)
    • FB Marketplace - 1974 Silver Opel Manta #3.5 (Custom interior and trim) - $6500 (2018)
    • eBay - 1973 Blue Manta - #4.5 - $2,400 (7/15)
    • eBay - 1974 Yellow Manta - Survivor #3 - $5250 (4/15)
    • eBay - 1972 Orange Rally Manta - #4 - $5037 (4/15)

    Values 1971-1975 Opel Manta

    • #0 - (Museum Level) : Unknown.. Best guess $30,000 +
    • #1 - (Concours Show Level) : $23,000 - $29,000
    • #2 - (NADA High) : $15,275 - $22,900
    • #3 - (NADA Avg) : $9,050 - $15,250
    • #4 - (NADA Low) : $5,900 - $9,000
    • #4.5 - (Restorable / Mechanically OK) : $3,400 - $5,800
    • #5 - (Borderline Restorable / Mechanically Runs but Not Safe / Repairable battery box / jack points) : $1,350 - $3,400
    • #6 - (Running Parts Car) : $350 - $1250 (Depending on the quality of parts)
    • #7 - (Barely Scrap) : $50 - $350 ($150 is what the guys that come get cars for scrap will give you.. good windshield is $250 )

    Add:

    • UNK - Automatic ( This is debatable.. Those WANTING an Automatic will pay the premium.. those that don't will not )
    • UNK - Vinyl Roof ( This is debatable.. Those WANTING it will pay more, those that don't will not )
    • 10% - Factory A/C
    • 10% - Sunroof

    Special Editions ( Note: These adders are on top of the others, but only valid on complete survivors or restored cars in #2 or above condition )

    • $500 - 1975 Model ( Complete With EFI and larger brake)
    • $500 - Luxus ( With original interior in good condition - 73 & 74 only.. center consoles unique by year) ( Gray interior 73 only & rare )
    • $1000 - Rallye ( Must include paint scheme and tach and gauge cluster - 71 a& 72 have bucket back seats, and bolsters on front seats)
    • $1000 - Blue Max ( 1973 Only must include Vinyl roof and sunroof )

    NOTE: NO Additional Value Seen in Market due to these variations

    • 1971-72 Mantas tend to be rare due to lack of big bumper protection and are the preferred model by some. In US badged as 1900 Coupe
    • 1973 Models have thin bumpers but rubber rubbing strips which are hard to replace - First year MANTA was used in US
    • ( 3 unique Luxus variants.. Silver Luxus interior VERY rare)
    • 1974 Models have Big Aluminum bumpers, the replacement rubber guards are hard to find ( 2 Unique Luxus variants Blue and Maroon )
    • 1975 Models come with Big Bumpers and many upgrades including bigger brakes and EFI

    NOTE: Asconas/1900 Sedans and Wagons seem to bring 20-50% less than Manta, closer to Kadett B pricing

    • Barrett-Jackson - LOT 9 - 1973 Ascona/1900 Wagon - #3 - $3,300 (2015)

    OPEL Kadett Valuation baseline :

    • Mecum - LOT F160 - 1968 Red 1.1L Wagon ( Bod Joyner ) - #1 - $22,500* (2017)
    • Mecum - LOT F83.1 - 1968 Red 1.1L Wagon ( Bod Joyner ) - #1 - $20,050 (2016)
    • Mecum - LOT F56 - 1968 Red 1.1L Wagon ( Bod Joyner ) - #1 - $19,000* (2017)
    • Mecum - LOT S55.1 - 1968 Red 1.1L Wagon ( Bod Joyner ) - #1 - $17,050 (2018)
    • Barrett-Jackson - LOT 188 - 1968 Red 1.1L Wagon ( Bod Joyner ) - #1 - $17,050 (2019)

    NOTE: The Bud Joyner Wagon has been at auction 5 times since 2016 ) = * High Bid did not sell

    • Mecum - LOT F83.1 - 1969 Bronze 1.1L Rallye (W/ AT) - #1 - $11,000 (2016)
    • Barrett-Jackson - LOT 620 - 1967 White 1.1L Rallye ( Gordy Klug ) - #1 - $21,450 (2014)

    Values 1966-1971 Opel Kadett

    #0 - (Museum Level) : Unknown.. Best guess $20,000 +

    #1 - (Concours Show Level) : $11,000 - $20,000

    #2 - (NADA High) : $7,000 - $11,000

    #3 - (NADA Avg) : $4,950 - $6,950

    #4 - (NADA Low) : $2,400 - $4,950

    #4.5 - (Restorable / Mechanically OK) : $1,500 - $2,400

    #5 - (Borderline Restorable / Mechanically Runs but Not Safe ) : $1,000 - $1,500

    #6 - (Running Parts Car) : $1,000 - $250 (Depending on the quality of parts)

    #7 - (Barely Scrap) : $250 - $150 ($150 is what the guys that come get cars for scrap will give you..)

    Add:

    • UNK - Automatic ( This is debatable.. Those WANTING an Automatic will pay the premium.. those that don't will not )
    • UNK - Vinyl Roof ( This is debatable.. Those WANTING it will pay more, those that don't will not )
    • 10% - Factory A/C
    • 10% - 1.5L (1968 only)
    • 15% - 1.9L
    • $500 - Sunroof

    Special Editions -

    ( Note: These adders are on top of the others, but only valid on complete survivors or restored cars in #2 or above condition )

    • $500 - LS
    • $1000 - Rallye ( Must include paint scheme and tach and gauge cluster )

    Note : U.S. Spec Kadetts from 1968-1972 have their own unique parts. So condition of tail lights can be critically important to value.

    • On all 69-71 U.S. Spec Kadetts the front grille and trim is unique, as are front side marker lights (70-71) / reflectors (68-69).
    • Taillights for 1969 and 1971 U.S. Spec Kadetts are unique to the US Models only
    • 1971 and 1972 U.S. Spec Kadetts license plate lights are different and the same as 1974-75 Opel Manta as well.

      Note : Kadetts come in a variety of shapes and sizes. ( rarely affecting value )
    • 2 Door Rallye Fast back
    • 2 Door Coupe LS
    • 2 Door Station Wagon
    • 2 Door Sedan
    • 4 Door Sedan - 2 years only : (71 US Spec version), 1967 (Std Kadett Version)

  • GoinManta September 17, 2021 at 10:29 AM

    Changed the title of the thread from “Opel Values - GT, Manta and Kadett B” to “Opel Value Guide - Opel GT, Opel Manta and Opel Kadett B - Updated Price Guide”.