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Cars / MG / MGB RoadsterLive
1975 MG MGB Roadster

✦ Shifty Estimate

$6,600

6.2% · 12 mo
High confidence$3K to $11K
12 months median
$7K
Sales, 12 months
43
Original MSRP
$4,297 · ▲ 54% since

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1975 MG MGB Roadster

1975 to 1980 · Convertible

Price history

$10k$20k$30k$40k$50kSep 202320252026✦ SHIFTY ESTIMATE TODAY $6.6k
Sold Bid, not sold
95 sales · 18 unsoldmedian $6.5kupdated Sep 2026

Recent sales

175 sales

Specifications

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

Common questions

How much does a MG MGB Roadster cost?

A 1975 MG MGB Roadster cost $4,297 new. Over the past 12 months, 43 have sold publicly at a median of $6,500. The Shifty Estimate for a well-kept example is $6,600. Cars have changed hands anywhere from $3,498 to $10,680, depending on mileage, color, and history.

What is a 1975 MG MGB Roadster worth today?

The Shifty Estimate is $6,600, down 6.2% over the past 12 months. Confidence is high: 43 public sales in a year gives a firm read.

Is a MG MGB Roadster a good investment?

It has appreciated 54% against its $4,297 list price. Values are down 6.2% 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.

What has a MG MGB Roadster sold for at auction?

The 3 most recent public sales we have on file:

  • $3,850Aug 29, 2026black · 26,281 mi
  • $6,000Aug 28, 2026Pageant Blue · 38,650 mi
  • $7,290Aug 26, 2026Black with silver MGB-branded side stripes · 92,000 mi

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.