BMW · Chassis code E21
The E21
The very first 3 Series. Overshadowed by the 2002 before it and the E30 after, which is exactly why it's worth a look.
Produced
1975–1983
Body styles
2-door sedan · Baur cabrio
Engines
I4 · I6
Firsts
First 3 Series
Market range
$6k–$30k
The story
Where the 3 Series started.
The E21 had the hardest job in BMW history: replacing the 2002. It was bigger, safer and more comfortable, and purists complained it had gone soft. Buyers disagreed, and over a million were sold.
Its most lasting idea was inside. The dashboard curved toward the driver, which became a BMW signature for decades. In Europe the 323i added the new M20 six-cylinder, making it one of the quickest small sedans of its day.
US buyers got the four-cylinder 320i, burdened by emissions equipment. The 320is sport package brought back some edge. Today the E21 is the overlooked middle child, which makes it good value.
Models & specs · US market
Pick your E21
| Model | Years (US) | Engine | Power | Why you'd want it | Typical price* |
|---|---|---|---|---|---|
| 320i | 1977–83 | 2.0L / 1.8L M10 I4 | 110 hp | The US car; simple, light and cheap to own | ~$10,800 |
| 320is | 1981–83 | 1.8L M10 I4 | 101 hp | US sport package with Recaros, a close-ratio 'box and an LSD | ~$20,300 |
| 323i | 1978–82 (Europe) | 2.3L M20 I6 | 141 hp | The Euro six-cylinder, and the one collectors want | ~$26,400 |
*US 320i power fell to 101 hp when the engine changed to 1.8 liters in 1980. Europe also got the 316, 318, 320 and 320/6. As of November 2026.
Why buy one
Pros
- Pure, light and simple, with the cockpit-style dash that defined later BMWs.
- Prices are well below the 2002 and E30 for a similar experience.
- The 323i is a genuine sleeper among Euro classics.
- Rare at shows, so a clean one stands out.
Think twice
Cons
- US cars are slow, especially the 1.8-liter cars after 1980.
- Rust is a major issue, and the supply of good cars is thin.
- Some trim and interior parts are getting hard to find.
- The early semi-trailing-arm rear can be tricky at the limit.
Buyer's guide
What to check before you buy
Body
Rear wheel arches, front valance, floor pans, jacking points and the bottoms of the doors. Check the sunroof drains.
Engine
M10 fours are tough but often tired. Check for a cracked head, smoke and oil leaks. On a 323i, check the timing belt history.
Fuel system
The K-Jetronic injection is sensitive to vacuum leaks. A car that idles badly may only need hoses, or it may need much more.
Interior
Dash cracks, seat bolsters and headliner. Interior trim is getting scarce.
Market · November 2026
Where values sit
US 320is are among the cheapest ways into a classic BMW, at around $11k. The 320is roughly doubles that, and the Euro 323i trades in the mid-$20s, with the best ones well above that.
Sources: Classic.com. Updated quarterly.
The verdict
If you want the 2002 experience for less money, find a rust-free 320is. If you want something rarer, import a 323i.
Sources