BMW E90 Sedan Buyer's Guide
The four-door E90 is one of the smartest used 3 Series buys — plentiful, practical and cheap to keep if you choose well. Here's the sedan range, the pre-LCI/LCI split, and a staged inspection to land a good one. Want the engine reliability detail? See problems by engine.
The short version
- The engine is the decision — a 328i and a 335i are very different cars to own.
- 328i (N52): the durable, low-fuss daily; 335i (N54→N55): fast and tunable, more to check.
- LCI (2009+) brought minor styling/iDrive updates and the N55 into the 335i.
- xDrive AWD was offered — great in snow, slightly more to maintain.
- Buy on service history and a cold start, not mileage; budget for cooling and (on the 335i) the fuel system.
The E90 four-door was the volume 3 Series — the one most families and commuters actually bought. That's good news used: there are plenty to choose from, parts are cheap and plentiful, and the four-door body adds practicality the coupe can't. This guide covers the sedan range, the pre-LCI/LCI split, and a staged inspection so you buy a good one.
The Sedan Range
Trims and engines you'll find shopping an E90.
| Trim | Engine | Character |
|---|---|---|
| 325i / 328i | N52 (NA six) | Smooth, durable, the sensible daily |
| 330i | N52 (NA six) | The torquier early NA six |
| 335i | N54 then N55 turbo | Fast and tunable — the enthusiast sedan |
| Diesels (Europe) | M47/N47/M57/N57 | Economical 318d–335d; their own checks |
| xDrive | Most engines | AWD — winter traction, a touch more upkeep |
For the full engine-by-engine reliability picture, read E90 Common Problems by Engine, and for the core choice see 328i vs 335i.
Pre-LCI vs LCI
The 2008 facelift, and why it matters.
The E90 sedan had its LCI facelift around 2008 (for the 2009 model year) — subtle exterior tweaks, interior and iDrive updates, and, importantly for the 335i, the switch from the twin-turbo N54 to the single-turbo N55 on later cars. If you want the easier-to-own turbo six, a later LCI 335i is generally the one to favour; pre-LCI cars can be great value but check the fuel-system history closely.
A Staged Inspection
Work through these in order when you view a car.
History & Cold Start
Ask for service records and start the car stone cold — listen for rough running, rattles or smoke. A documented history beats a low odometer every time.
Cooling System
The electric water pump and thermostat are E9x wear items. Check for past replacement, look for coolant residue, and make sure it warms up and the heater blows hot without temperature swings.
Fuel System (335i)
On a 335i, probe the HPFP and injector history — long hot starts, stutter or fuel-trim faults are red flags, especially on the twin-turbo N54.
Oil Leaks
Look down the side of the block for weeping from the valve cover and oil filter housing gaskets — common with age and cheap to reseal, but useful for negotiating.
Electronics & FRM
Cycle the windows, lights and indicators. The FRM footwell module can fault (often after battery issues) — confirm all lighting and window functions work.
Suspension, Tyres & Brakes
Check for knocks over bumps, uneven tyre wear (alignment/arms), and brake condition. Budget for control arms and bushings on higher-mileage cars.
Test Drive & Scan
Drive it properly — smooth shifts, no warning lights, straight tracking — and ideally scan for stored codes with an OBD2 tool before buying.
FAQ
Which E90 sedan engine is most reliable?
The naturally-aspirated N52 (325i/328i/330i) is the most dependable and cheapest to run. The 335i is much faster and very tunable, but the turbo sixes need more attention — the later single-turbo N55 is easier to own than the early twin-turbo N54.
Is the 335i sedan worth it over the 328i?
If you want serious pace and tuning potential, yes — but go in with eyes open on the fuel system and cooling. For a low-fuss daily, the 328i is the smarter buy. Our 328i-vs-335i guide walks through the trade-offs.
Pre-LCI or LCI E90?
LCI (roughly 2009+) brought small styling/iDrive updates and the N55 into the 335i, which is the easier turbo six to own. Pre-LCI cars can be excellent value — just inspect carefully, especially the N54 335i's fuel system.
Is xDrive worth it on the E90?
If you face real winters, the AWD traction is genuinely useful. It adds a little complexity and running cost versus rear-wheel drive, but nothing alarming. In dry climates, RWD keeps things simpler.
How is buying the sedan different from the coupe?
Mechanically it's the same decision (engine first), but the sedan adds rear-door practicality, tends to be better value, and skips the coupe's frameless-window quirks. See our Sedan vs Coupe comparison for the full picture.
The Bottom Line
The E90 sedan is one of the smartest used 3 Series buys — plentiful, practical and cheap to keep if you choose well. Pick the engine for how you'll use it, favour a documented car, work the staged inspection, and pay special attention to cooling and (on a 335i) the fuel system. Next: problems by engine, sedan vs coupe, and the E90 hub.