Buyer’s Guide — MG MGB
What to know before buying an MG MGB.
Overview
The MG MGB was produced from 1962 to 1980, making it one of the longest-running and most popular British sports cars ever, with over 500,000 built. The monocoque roadster and GT coupe featured a 1,798 cc B-series engine producing 95 bhp (reduced to 62.5 bhp on late US-spec rubber bumper cars). It remains the most accessible and affordable classic British sports car.
Model Variants
| Roadster (1962–80) | Open two-seater, chrome or rubber bumpers |
| GT (1965–80) | Fixed-head coupe with hatchback, chrome or rubber bumpers |
| Chrome Bumper (1962–74) | Lower ride height, more power, most desirable |
| Rubber Bumper (1974–80) | Raised ride height, reduced power (US spec), large black bumpers |
| MGB GT V8 (1973–76) | Factory Rover 3.5L V8, rare, UK market only |
What to Look For — Body & Chassis
| Sills | The single most critical area. Inner and outer sills are structural — rusty sills compromise the car’s integrity. Check thoroughly from above, below, and inside. |
| Floor Pans | Check from both sides. Toe boards and front floor sections are common rust areas. |
| Rear Wheel Arches | Very common rust area. Check for filler and poor repairs. |
| Door Bottoms | Rust at the bottom lip. Easy to see and cheap to repair. |
| Spring Hangers | Rear spring hangers corrode — critical structural point. |
| Heritage Shell | British Motor Heritage produced new body shells — a car on a Heritage shell is not a bad thing if the build quality is good. |
What to Look For — Mechanical
| Engine | The 1,798 cc B-series is simple and tough. Check oil pressure (50+ psi cold, 30+ hot). Listen for bottom-end knock. Blue smoke on overrun means valve guides. Rebuilds are affordable. |
| Gearbox | Three-synchro (early) or four-synchro (1968+). Overdrive is highly desirable — check it engages cleanly. Non-overdrive cars can be upgraded. |
| Brakes | Front discs, rear drums. Should stop straight with good pedal feel. |
| Electrics | Lucas electrics — check everything works. Negative earth conversion is common on early positive-earth cars. |
| Overdrive | If fitted, test at driving speed in 3rd and 4th. Should engage cleanly with no delay. |
Parts Availability
The best of any classic British sports car. Moss Motors, Rimmer Bros, British Parts Northwest, and dozens of others carry every part imaginable. You can literally build a complete MGB from new parts. Heritage body shells are available. This is the easiest classic British car to maintain and restore.
What a Good One Should Feel Like
The MGB should feel solid, predictable, and enjoyable. The engine pulls well from 2,500 rpm with a pleasant exhaust note. Steering is direct and reasonably weighted. The ride is firmer than a touring car but never harsh. With overdrive engaged the car cruises happily at motorway speeds. Chrome bumper cars feel lower and sportier; rubber bumper cars ride slightly higher but are fundamentally the same car.
Price Guide (Approximate, 2026)
| Rubber Bumper Roadster — Project | $5,000 – $10,000 |
| Rubber Bumper Roadster — Good | $15,000 – $22,000 |
| Chrome Bumper Roadster — Project | $10,000 – $18,000 |
| Chrome Bumper Roadster — Good | $22,000 – $35,000 |
| Chrome Bumper Roadster — Excellent | $38,000 – $55,000 |
| GT — Typically | 20–30% less than equivalent roadster |
| MGB GT V8 | $45,000 – $80,000 |
Chrome bumper cars are significantly more desirable than rubber bumper models. Overdrive adds 10–15% to value. Heritage shell cars should be priced slightly below original-shell cars of equivalent condition.