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BMW 3 Series E36 buying guide

The third-generation 3 Series, launched as a saloon in 1990 and followed by the coupé, convertible, Touring and Compact. Engines range from four-cylinder petrols to the smooth straight sixes and the 325tds diesel, all with rear-wheel drive.

The versions

  • Four-cylinder petrols: 316i and 318i (M40 8-valve with a cambelt until late 1993, then the chain-driven M43); 16-valve M42 and M44 in the 318is and 318ti
  • Six-cylinder petrols: 320i, 325i (M50, 192PS) and, from the mid-1990s, the M52 in the 320i, 323i and 328i (193PS)
  • Diesels: 318tds, 325td (115PS) and 325tds (143PS)
  • Saloon, coupé, convertible, Touring estate and Compact hatchback, all rear-wheel drive
  • 5-speed manual or automatic

What to check on a E36 3 Series

3 model-specific things to look at when you view one. They're a starting point, not the full inspection.

  1. The cambelt on early four-cylinder cars

    What to look for: On a 316i or 318i built before late 1993, ask the seller for the engine code and an invoice showing when the cambelt was last changed, by date as well as mileage.

    Why it matters: The M40 eight-valve engine in the early four-cylinder cars uses a cambelt, and it's an interference engine, so a belt that breaks can wreck it. Belts age with time as well as miles. The M43 that replaced it in late 1993 uses a chain.

  2. Water pump and cooling on the six-cylinder cars

    What to look for: With the engine cold, check the coolant expansion tank level, and look at the front of the engine for coolant staining or crusty residue. Ask whether the water pump has been replaced and when.

    Why it matters: The water pump is a known weak point on the M50 six-cylinder, and on the M42 four-cylinder, and specialists advise replacing it soon after purchase if there's no record. An invoice for the pump and cooling parts is a sign of a car that's been looked after.

  3. Oil in the coolant on the 16-valve cars

    What to look for: On a 318is or 318ti, open the coolant expansion tank cap with the engine cold and look for an oily film or a creamy residue. Check the oil filler cap underside too.

    Why it matters: Oil in the coolant is a known thing to check on the 16-valve four-cylinder engines. Clean coolant and a clean filler cap are what you want to see.

Also in the full guide

  • Nikasil blocks on M52 engines
  • Rear subframe mounts and the front arms
  • Rot in the boot
  • The convertible hood
  • The cold start, test drive and paperwork checks for the exact version you're viewing

The full guide to the E36 3 Series

The CrankSight guide walks you round the car on your phone at the viewing, with every check for the exact version you're looking at: what to look for, where to find it, and what anything you find is likely to cost. As you go it builds an assessment of that car, and if you view more than one, it lines them up side by side.

£29 for the model, used on as many cars as you like, delivered within 72 hours or your money back.

Get the E36 3 Series guideSee a full guide free

Other generations

BMW 3 Series E46 · BMW 3 Series E90/E91/E92/E93 · BMW 3 Series F30/F31/F34 · BMW 3 Series G20/G21

General points for the model, last checked October 2026. Every car is different, so treat this as a guide to what to look at, not a verdict on any car. CrankSight is independent and has no connection with BMW.