MG MGB Roadster

1975 to 1980 · Convertible

A 1975 MG MGB Roadster cost $4,297 new. Over the past 12 months, 52 have sold publicly at a median of $6,650. The Shifty Estimate for a well-kept example is $6,500. Across the sales we have on file, prices ran from $1,000 to $56,000, depending on mileage, color, and history.

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Shifty Estimate

$6,500

High confidence · $4K to $11K

4.6% over 12 months

Median · 12 mo: $6,650
Sales · 12 mo: 52
Original MSRP: $4,297Up 51% since new

Enthusiast

Sold$15,000 · Bring a Trailer · Oct 2026

The market

Every recorded 1975 MG MGB Roadster sale, by date and price

Oct 2026 · Bring a Trailer

$15,000 · 2,000 mi · Matte black

See this car

Sold Bid to, not sold

103 sales · 26 unsoldmedian $6.7kupdated Oct 2026

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Latest results

The newest 1975 MG MGB Roadster sales with photographs

Sold $3,900

1979 · Bronze · 68,000 mi

Oct 5, 2026 · Bring a Trailer

Sold $19,265

£14,500

1978 · red · 21,335 mi

Sep 30, 2026 · Car & Classic

UK sales of this model ran level with US sales over 3 years.

Sold $9,541

£7,200

1981 · bronze · 70,560 mi

Sep 27, 2026 · Car & Classic

UK sales of this model ran level with US sales over 3 years.

Sold $6,500

1979 · Inca Yellow · 57,000 mi

Sep 25, 2026 · Bring a Trailer

Sold $4,956

£3,700

1978 · blue · 40,200 mi

Sep 21, 2026 · Car & Classic

UK sales of this model ran level with US sales over 3 years.

Sold $5,200

1980 · Black · 378 mi

Sep 18, 2026 · Bring a Trailer

Other MGB generations

Specifications

Engine: Inline-4, 1.8L
Power: 62 hp
Torque: 92 lb-ft
0 to 60: 12.9 s
Top speed: 103 mph
Transmission: Manual
Drivetrain: RWD
Original MSRP: $4,297

Common questions

How much does a MG MGB Roadster cost?

What is a 1975 MG MGB Roadster worth today?

The Shifty Estimate is $6,500, down 4.6% over the past 12 months. Confidence is high: 52 public sales in a year gives a firm read.

Is a MG MGB Roadster a good investment?

It has appreciated 51% against its $4,297 list price. Values are down 4.6% over the past 12 months. The caution is spread, not direction: across the sales we have on file, prices ran from $1,000 to $56,000, and mileage explains most of that.

How many MG MGB Roadster have sold?

Shifty has 188 public sales of the MG MGB Roadster on file. The earliest was on Feb 20, 2018.

What has a MG MGB Roadster sold for at auction?

The 3 most recent public sales we have on file:

$15,000Oct 11, 2026Matte black · 2,000 mi
$3,900Oct 5, 2026Bronze · 68,000 mi
$19,265Sep 30, 2026red · 21,335 mi

About the 1975 MG MGB Roadster

The late-production MGB represents the final evolution of Britain's most successful sports car, with these 1975-1980 examples marking the end of an era. While purists often favor earlier chrome-bumper cars, these rubber-bumper MGBs offer their own appeal with improved safety equipment and refined engineering. The 1.8-liter B-series four-cylinder produced around 62 horsepower in emission-controlled form, paired with the classic four-speed manual transmission. Production during this period totaled approximately 100,000 units before MG ceased operations in 1980. Today's collectors increasingly appreciate these final MGBs for their relative affordability and easier restoration compared to earlier models. The convertible top mechanism was well-sorted by this point, and many examples survive with original Rostyle wheels and period accessories. While not the fastest or most valuable MGB variant, these late cars represent accessible entry points into classic British motoring with genuine MG DNA intact.