Volvo 121 vs 122?

Shopping for a Volvo Amazon and confused by the badge on the trunk? The 121 and 122 aren’t different cars — they’re the same body with two very different engines underneath, and that distinction changes how the car drives, what it’s worth, and what you’re actually buying.

TL;DR

• The 121 is the base Amazon trim with a single-carburetor engine
• The 122S is the performance trim with dual carburetors and noticeably more power
• Both started life on the 1,583cc B16 engine before moving to the B18 and eventually the B20
• The 122S produced 85 bhp at launch versus the 121’s 66 bhp
• Values run close between the two, but 122S two-doors carry a premium over four-door variants

Volvo 121 vs 122: The Short Answer

The 122 is the sportier badge, the 121 is the economy badge. Both wear the Amazon body Volvo built from 1956 to 1970, but the 122, introduced in 1958, added dual carburetors and higher compression for real performance gains, while the 121 kept things simple and affordable throughout its run.

I’ve spent time digging through Volvo’s own archived model specs and classic-car valuation guides to map out exactly where these badges diverge, since Volvo’s numbering system trips up even seasoned collectors.

A Quick History

The Amazon launched in 1956 as the 121, fitted with the 1,583cc B16 engine, a single carburetor, and 66 bhp at 4,500 rpm. Volvo introduced the 122S as a sportier companion in 1958, adding dual SU carburetors and pushing output to 85 bhp at 5,500 rpm.

Why “Amazon” doesn’t appear on most export cars is its own quirk: a German motorcycle maker had already registered the name, so Volvo used “121” and “122” outside Sweden instead.

Pull quote: The 121 and 122S aren’t rival cars — they’re the same Amazon wearing two different states of tune.

Specs at a Glance

By the late 1960s the gap widened further: the final 121 used the single-carb B20A at 90 bhp, while the 122S’s twin-carb B20B reached 118 bhp — nearly a third more power from the same basic block.

Where the 122 Pulls Ahead

It leads on performance, desirability, and resale value among enthusiasts. The 122S’s dual-carb setup wasn’t just a paper spec bump — period reviewers described its “take-off as vivid as a rocket burst,” according to a Silodrome retrospective quoting contemporary road tests.

A few things the 122S offers that the 121 doesn’t:

• Standard four-speed gearbox (M40/M41) versus the 121’s mix of three- and four-speed options
• Higher trim levels and more chrome/badging distinction over the years
• Stronger collector demand today, especially in two-door form

Quick Tip: If you’re buying for driving enjoyment rather than pure originality, a 122S with the B18 or B20 engine and factory overdrive is widely regarded by specialists as the sweet spot for usable classic performance.

Where the 121 Still Makes Sense

It leads on simplicity, affordability, and lower running costs. The single-carburetor engine means one less carb to tune and balance, which matters if you’re new to classic-car maintenance.

Expert Insight: A well-sorted 121 isn’t a lesser car — it’s a more forgiving one. Fewer carburetors means fewer things to go out of sync on a Saturday morning drive.

Real-world scenario: A first-time classic-car owner who just wants a reliable weekend cruiser, without the fussiness of dual carbs, will likely be happier — and spend less on tuning — with a well-maintained 121 than a highly strung 122S.

Pros and Cons by Buyer Type

The Weekend Cruiser

• ✅ Volvo 121: simpler single-carb engine, lower maintenance fuss
• ❌ Volvo 122S: dual carbs need periodic balancing to run right

The Performance-Minded Collector

• ✅ Volvo 122S: more power at every engine stage, sportier reputation
• ❌ Volvo 121: noticeably slower in every comparable model year

The Value-Focused Buyer

• ✅ Volvo 121: typically the more affordable entry point into Amazon ownership
• ❌ Volvo 122S: two-door 122S models carry a real price premium over other variants

Alternatives Worth Considering

Choose the 123GT if you want the sportiest Amazon body Volvo built — it used a high-compression 115 bhp version of the P1800’s engine and remains the most valuable and desirable Amazon variant today.

Choose a 122 wagon (P220) if you want Amazon character with real cargo practicality — Hagerty notes these wagons hold some of the strongest values in the whole lineup.

FAQ

What’s the actual difference between a Volvo 121 and 122? The 121 uses a single-carburetor engine tuned for economy, while the 122 (122S) uses dual carburetors and higher compression for meaningfully more horsepower, starting with the very first B16 engines in 1956–58.

Is a 122S worth more than a 121? Generally yes, especially in two-door form — Hagerty valuation data shows 122S two-doors carrying roughly a $2,500 premium over comparable wagon variants in excellent condition.

Can you convert a 121 into a 122S spec? Enthusiasts sometimes swap in twin-carb setups, but a genuine factory 122S with matching numbers will always be worth more to serious collectors than a converted 121.

What engines did the 121 and 122 eventually get? Both moved from the original B16 to the B18 in 1961, and then to the B20 in 1968, with the 122’s version of each engine consistently tuned for more power than the 121’s.

Are parts still available for these classic Amazons? Yes — specialists across the UK, Sweden, and the Netherlands maintain strong parts availability for the 120-Series, since roughly half a million cars were built between 1956 and 1970.

Key Takeaways

• The 121 and 122 are trim levels on the same Amazon body, not separate models
• The 122S has always outpaced the 121 in horsepower, from the B16 through the B20
• Two-door 122S models command the strongest collector premiums
• The 121 remains a simpler, more affordable entry point into Amazon ownership
• The 123GT sits above both as the most desirable and valuable Amazon variant

Next Step

Check the commission plate’s type number before buying either car — it’s the only reliable way to confirm exactly which engine and trim you’re actually looking at.