I don't know the MG B up close from my youth. We were five children and my father was the sole breadwinner. There was no room for a second car and the first car had to be big enough for the whole family. But from the street scene of the '70s and '80s? Absolutely. That typical chrome grille, the sound of that four-cylinder, the smell of oil that lingers when such a roadster drives by. The MG B (MGB) wasn't everywhere, but you encountered it regularly. And that was no coincidence. From 1962 to 1980, 512,243 examples were built. 386,961 roadsters and 125,282 GTs. Those are figures that many modern sports cars would be jealous of. The car made sporty open-top driving accessible to the masses. Not a temperamental Italian exotic that had to go to the garage every month. Just a solid British roadster that you could drive to work, take on a tour during the weekend, and that usually just started. This is the story of that car. From its revolutionary beginning to its emotional end. And why it's still relevant today, more than forty years after production ended.

 

MG B Roadster in Brief (1962–1980)

The MG B (MGB) was built from 1962 to 1980 in 512,243 examples: 386,961 roadsters and 125,282 GTs. The car received a revolutionary unibody construction (monocoque), a reliable 1798cc BMC B-Series engine, and optional Laycock overdrive. From chrome bumper to rubber bumper—this is the story of one of the most successful British roadsters ever.

Why the MGA No Longer Worked: The Birth of the MG B

The MGA was beautiful. No misunderstanding about that. With its voluptuous lines and classic proportions, it was a gorgeous car. But by 1960 it was hopelessly outdated. The problem lay in the classic ladder chassis on which the body rested. Those thick steel tubes made for a heavy car with little interior space. The luggage space? You could barely fit a weekend bag in there. And because of those high chassis beams, the seats also sat high, which compromised headroom. Syd Enever, the man who had designed the MGA, knew it had to be different. He had experienced the limitations of the old concept himself. His solution was radical for the time: no separate chassis anymore. The new car, internally called Project EX205, would get a self-supporting body. Chassis and bodywork became one welded whole, a monocoque. This had three major advantages. First, the car was much stiffer, which benefited handling, less twisting in corners and tighter steering. Second, everything could be lower, which provided more space in the cockpit without the car becoming larger. More headroom, lower seats, more spacious luggage space. And third, you finally had something like a crumple zone. Although no one called it that in 1962. The monocoque construction, with its specially designed front subframe, offered a relatively well-thought-out crash structure for its time. Don Hayter designed the body, with subtle influences from Pininfarina. Where the MGA was round and voluptuous, the B got tight, modern lines. Surprisingly aerodynamic for its time. On September 20, 1962, it stood at the Earls Court Motor Show in London. The public was immediately enthusiastic. Within a few months, the dealers were full of orders.

The Engine: 1798cc BMC B-Series, Simple and Reliable

They chose the BMC B-Series engine, enlarged to 1798cc. Nothing special really. The same block you'd find in an Austin-Healey or even a taxi. But that was exactly the point. The engine was proven. Simple to maintain. No exotic carburetors that constantly needed adjustment. No parts that could only be obtained in Milan.

At launch it produced 95 hp at 5,400 rpm. That sounds modest now, but with 149 Nm of torque at low revs, the car pulled nicely. This high torque at low revs made the car easy to drive without much shifting—a characteristic that was essential for success in the American market. You reached 100 km/h in just over 11 seconds. The top speed was around 165 km/h. For 1962, that was more than enough to keep up with your friends on the highway. The gearbox had four gears, but, and this is important, the first gear had no synchromesh. That meant you either had to be completely stationary before downshifting to first, or you had to master the art of double-declutching. Old school. But those were the times. Drivers learned to deal with it, or they bought the optional overdrive.

Laycock Overdrive: The Long-Distance Cruiser

That Laycock de Normanville overdrive was a blessing. It worked on third and fourth gear and made the B an excellent long-distance cruiser. Ideal for a weekend to the coast or, for the brave, to the continent. With the overdrive engaged, the engine revved quietly on the highway. That saved fuel and provided a pleasant engine sound.

MG B Roadster Model Years and Differences: From Mark I to Rubber Bumper

The MG B went through different phases between 1962 and 1980, from Mark I to Mark III, and from chrome bumper to rubber bumper. Each period brought technical improvements and visual adjustments.

1962–1967: Mark I with Pull-Handles and 5-Main Bearing Engine

The first MG Bs, which we now call the Mark I (although it wasn't called that at the time), are recognizable by their 'pull-handle' door handles. Those chrome spoons that you pull towards you. Beautiful vintage, lovely to look at, but not really safe. In a collision they could easily unhook. In April 1965 they were replaced by push-button handles—safer, but according to purists less beautiful. More important was what happened to the engine in October 1964. The original crankshaft had only three main bearings—the so-called 3-main bearing. That worked fine, but at high revs the engine could become somewhat shaky and wear faster. The new engine got five bearings—the 5-main bearing. That made it slightly less "rev-happy," but considerably more durable and smoother. For daily use, this was an important improvement. So there exists a small group of cars—built between late 1964 and April 1965—that combine the beautiful pull-handles with the technically superior 5-bearing engine. These are nowadays gems for collectors who know the difference. They offer the best of both worlds: the classic aesthetics of the early cars with the reliability of the later engine. Our MG B is a British roadster from 1965 in Signal Red with the classic pull-handle door handles and the reliable 5-main bearing engine. The combination that connoisseurs seek. In 1965 there was also a GT version, the coupe. Although this story focuses on the roadster, the GT is relevant because it proved how robust the basic construction was. That heavier coupe showed that the MG B chassis could handle much more weight and load. Later the GT even got a Rover V8, which proved that the chassis could handle much more power than the standard four-cylinder ever produced.

1967–1969: Mark II with Full Synchromesh

In 1967 the B received a thorough update. This is called the Mark II, although British Leyland didn't use that designation consistently. Visually you hardly notice it. The reverse lights now sit on the rear panels instead of on the bumpers. Under the skin, the car became much better. Finally the gearbox got synchromesh on all gears, including first. No more fuss with double-declutching or coming to a complete stop. An automatic gearbox also became available as an option, although it was rarely chosen by enthusiasts. The MG B that you can rent from us now has a synchronized gearbox. The old Banjo rear axle—which owed its name to its shape—made way for a Salisbury axle, also called tube-type. The Banjo had a tendency to twist or leak under heavy use. The Salisbury axle was much stronger, could handle considerably more power and was much more durable. An important upgrade for those who wanted to use the car sportily. And the old-fashioned dynamo was replaced by a modern alternator. Finally sufficient power, even when the engine was idling. No more weak lighting in city traffic, no battery that ran flat after a short drive. 1968 was also the year that BMC merged with Leyland Motors to form British Leyland. That sounds boring, but it would have enormous consequences. Suddenly MG had to compete with sister brand Triumph within the same company. The TR6 and Spitfire were internal competitors. Internal politics became more important than the customer. That would ultimately prove fatal for MG.

1969–1974: "Mark III" with Black Grille (Chrome Bumper Period)

From late 1969 the car gradually changed appearance. Enthusiasts often speak of the "Mark III," although British Leyland never officially used that term consistently. The aesthetics of the '70s made their entrance. The beautiful chrome grille disappeared. It was replaced by a black, recessed aluminum grille. The classic steel dashboard, beautiful to look at, dangerous in a crash, made way for a safer dashboard covered with soft plastic. Mockingly, people called it the "Abingdon pillow." The classic toggle switches made way for safety rocker switches. The leather upholstery became vinyl, called Ambla, and the seats got a different pattern. All this came from new safety requirements in the United States. The US was by far the most important export market for MG. Washington dictated what was allowed and required in a car. The result was safer dashboards that caused less injury in a collision, better lighting. According to purists also a lot more boring. But the performance of the engine remained reasonably stable, although emission requirements in the US meant that the compression ratio had to be lowered, which compromised peak power. The period 1969–1974 is also called the chrome bumper period by enthusiasts, while everything from 1974 falls under the rubber bumper period.

1974–1980: The Rubber Bumper Period

And then came 1974. The year everything changed. A challenging year for car designers worldwide, and the MG B was hit hard. The American government introduced strict crash safety standards. A car had to withstand an impact of 5 miles per hour—8 km/h—without damage to safety-related components. The elegant chrome bumpers of the B offered no protection against that. British Leyland had no money to redesign the car. The solution was drastic: massive bumpers of black polyurethane with a heavy steel core, protruding several centimeters. Budget-driven and not beautiful, but effective. Additionally, there was a problem with headlight height. American law required a minimum height for headlights. The MG B was too low. Instead of redesigning the nose of the car, they decided to raise the entire suspension by 1.5 inches, approximately 3.8 centimeters. The result was disastrous for handling. By raising the center of gravity and initially omitting the anti-roll bars, the tight handling of the MG B was compromised. The car became less tight and more prone to body roll. Only in 1977 did they put the anti-roll bars back, particularly the front bar became standard again, which made the handling acceptable again. Performance also suffered. Emission requirements became increasingly strict, especially in California. In the most severe specification, power in the US dropped to a measly 63 hp. European versions retained more power of around 84 hp, but were still slower than their predecessors due to the heavy bumpers and higher air resistance. Yet the car continued to sell. In fact, the late '70s were very successful in terms of sales figures. The rubber bumper models were more comfortable and more modernly equipped. People apparently still wanted an affordable roadster. Even with rubber bumpers.

MG B in Motorsport: Le Mans, Monte Carlo and SCCA

You might not expect it from such an amiable touring car, but the MG B has a respectable track record in motorsport. The BMC Competitions Department deployed the car for tough international races. Not to win, but to demonstrate reliability. And that worked.

24 Hours of Le Mans (1963)

In 1963 Paddy Hopkirk and Alan Hutcheson drove a specially prepared MG B through the (also somewhat tragic) 24 Hours of Le Mans. They reached the finish, which was already an achievement for most cars at that time. For BMC, completing this endurance race was a victory in itself. In MG history, finishing Le Mans is considered an important class success—proof that the car was reliable enough for the toughest test in motorsport.

Monte Carlo Rally (1964)

The MG B also proved itself in rallies. In the 1964 Monte Carlo Rally, one of the toughest rallies in the world with snow, ice and treacherous mountain passes, MG B drivers achieved class successes in the GT category. These achievements were crucial for brand image, especially in the United States.

SCCA Championships (USA)

Even more important was the success in America. There the B dominated for years in the production classes of the SCCA championships—the Sports Car Club of America. That proved that the car, when properly prepared, was an extremely capable and reliable racer. For MG, that proof of quality was more important than any advertising campaign.

MG B Reliability and Maintenance

The MG B is known for its solidity. The 1798cc BMC B-Series engine is simple and easy to maintain. No exotic parts, no mysterious electrics. Just a robust engine that you can maintain with basic tools. Parts are easier to get today than when the car was new. British Motor Heritage produced complete bodies for years, and a worldwide industry of specialists has emerged. From Groningen to Maastricht you'll find MG clubs full of people sharing knowledge. Forums are full of detailed knowledge. You don't need to take out a mortgage to get parts. Rust is the biggest enemy, as with any British classic car. The sill construction, wheel arches and floor pan require attention. But if you prevent instead of cure, the MG B remains reliable for years. Regular greasing, oil changes, carburetor adjustment—these aren't secrets but routine.

The End: October 1980 and the Limited Edition

British Leyland was bleeding at the end of the '70s. Michael Edwardes, the new chairman of BL, had to drastically restructure. The factory in Abingdon was outdated. Due to the extremely strong pound against the dollar, MG lost money on every car that went to America.

The decision was painful but inevitable. Abingdon had to close. Production of the B had to stop. Workers protested. Fans around the world wrote angry letters. It didn't help. On October 22, 1980, the very last MG B rolled off the line. To mark the farewell, they built 1,000 "Limited Edition" roadsters. The British version was finished in bronze metallic, the American in black. With that last car came an end to eighteen years of production. And to an era. The factory where Cecil Kimber had started building sporty MGs in the '20s closed. The MG badge would only survive the '80s on sporty versions of the Austin Metro and Maestro. Not pleasant for those who had loved the brand.

Afterwards: Heritage, RV8 and the Bridge to MG F

But the story didn't end there completely. The B was so popular that a complete industry emerged to keep them on the road. British Motor Heritage took over the original molds. Started pressing completely new bodies. You could literally build a new MG B from parts, a luxury that few classic cars have.

MG RV8 (1992-1995)

In the early '90s Mazda came with the MX-5. Essentially a Japanese tribute to the classic British roadster, to the Lotus Elan/MG B concept. Rover Group, by now the successor to British Leyland, saw the success of the MX-5 and thought: if the Japanese can do it, why can't we? They took those Heritage bodies and put a 3.9 liter Rover V8 in them. Together with a luxury leather interior and modernized suspension. The MG RV8 was built from 1992 to 1995. About 2,000 units. It was an expensive nostalgia trip, a heavily modernized MG B Roadster for enthusiasts with deep pockets. But the RV8 was more than a commercial stunt. It formed the crucial bridge between the past and future of MG. The experience with reintroducing a roadster, the technical updates to the classic base, and especially the market reaction gave Rover the confidence to continue. In 1995, the year RV8 production stopped, the MG F was launched—the first truly new MG roadster in more than thirty years. Without the RV8 as an intermediate step, that step would probably never have been taken.

Why the MG B Still Matters Today

Today the MG B is one of the most popular classic cars in the world. And that's not for nothing. It was never the fastest. That was the Jaguar E-Type. It wasn't the cheapest. Those were the Midget and the Sprite. And it certainly wasn't the most advanced. That honor went to the Lotus Elan with its plastic body and refined suspension.

But the B was solid. Robust. You could drive it to work. Take a tour on the weekend. Go on vacation to France or Germany. And it almost always started. The B marked a transition. It introduced the unibody to the masses. Survived almost two decades of immense cultural and technical changes. It sounds like a B-Series engine should sound, that characteristic rumble. Smells of oil and old vinyl. The steering gives direct feedback about what's happening. No servo, no electronics, no layer between you and the road. In a time of electric steering, touchscreens and autonomous functions, that's priceless. The MG B offers an analog experience in a digital world.

Driving an MG B: What to Expect

That analog experience? You need to get used to it. An MG B drives differently than a modern car. And that's exactly the point.

The Cold Start

In cold weather you pull out the choke before turning the key. The engine coughs, growls, comes to life. You let it warm up for a bit. No rush. That's how it should be.

The Steering

No power steering. At low speeds you feel every kilo of those front wheels. But at speed the steering tells you everything. Every bump, every corner, every correction—direct feedback without filter.

The Brakes

Discs front, drums rear. You need to anticipate. No ABS, no emergency brake assist. You learn to modulate again, to plan, to look ahead.

The Gearbox

The gear lever has a long throw. Shifting is a movement, not a tap. With our car with the fully synchronized gearbox from after 1967 it goes smoothly, but it does require conscious input.

The Convertible Top

You put that up and down manually. Takes two minutes. In rain it gets exciting—you're not waterproof, you're splash-proof. Bring a towel.

These aren't disadvantages. These are characteristics. They make you drive consciously. That you feel the car. That you are present.

Timeline in Brief

• 1962-1964 – Early Mark I: Pull-handle handles, 3-bearing crankshaft, Banjo rear axle
• 1964-1967 – Late Mark I: 5-bearing engine (Oct '64), push-button handles (Apr '65)
• 1967-1969 – Mark II: Full synchromesh, alternator, Salisbury rear axle
• 1969-1974 – "Mark III": Black grille, plastic dashboard, modern seats (chrome bumper period)
• 1974-1980 – Rubber bumper: Black bumpers, raised suspension, anti-roll bar back (1977)
• 1980 – Limited Edition: Last 1,000 cars, unique finish