2018 BMW 3 Series

Sold as 320i, 320i xDrive, 328d, 328d xDrive, 340i, 340i xDrive, 330i, 330i xDrive, 330e

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What changed

LED headlights are standard, and iDrive 6.0 with a touch screen is available.¹

What it came with

Badges

320i: 2.0L turbo four-cylinder, lower output, Rear-wheel drive^2,1
320i xDrive: 2.0L turbo four-cylinder, lower output, All-wheel drive^2,1
328d: 2.0L turbo diesel four-cylinder (N47), Rear-wheel drive^3,1
328d xDrive: 2.0L turbo diesel four-cylinder (N47), All-wheel drive^3,1
340i: 3.0L turbo inline-six, Rear-wheel drive^4,1
340i xDrive: 3.0L turbo inline-six, All-wheel drive^4,1
330i: 2.0L turbo four-cylinder, new for 2017, Rear-wheel drive^5,1
330i xDrive: 2.0L turbo four-cylinder, new for 2017, All-wheel drive^5,6
330e: 2.0L turbo four-cylinder plug-in hybrid, Rear-wheel drive^5,1

2.0L turbo four-cylinder, lower output^2,4

180 hp, 200 lb-ft · 2013–2018
2.0L turbo four-cylinder, new for 2017⁵

2017–2019
3.0L turbo inline-six^4,1

320 hp · 2016–2018
2.0L turbo diesel four-cylinder (N47)^3,1

180 hp, 280 lb-ft · 2014–2018
2.0L turbo four-cylinder plug-in hybrid^5,1

2017–2018

Transmissions: 6-speed manual^7,4, 8-speed automatic^7,4
Drivetrains: Rear-wheel drive⁷, All-wheel drive^7,3
Trims: Sedan (2012–2018)^7,6, Sports Wagon (2014–2019)^3,6, Gran Turismo (2014–2018)^3,1
Packages: Sport Line^7,5, Luxury Line^7,5, M Sport^7,3

Colors

Alpine White 2014–2018 ^8,9
Jet Black 2014–2018 ^8,9
Black Sapphire Metallic 2014–2018 ^8,9
Mineral White Metallic 2014–2018 ^8,9
Mineral Grey Metallic 2014–2018 ^8,9
Melbourne Red Metallic 2014–2018 ^8,9
Glacier Silver Metallic 2014–2018 ^8,9
Jatoba Brown Metallic 2018 ⁹
Mediterranean Blue Metallic 2018 ⁹
Platinum Silver Metallic 2018 ⁹
Sunset Orange Metallic 2018 ⁹

Interiors

Black Leatherette (SensaTec), 2014–2018 ^8,9
Venetian Beige and Black Leatherette (SensaTec), 2018 ⁹
Black Dakota leather, 2014–2018 ^8,9
Venetian Beige and Black Dakota leather, 2018 ⁹
Oyster Dakota leather, 2018 ⁹

Compare with another year

Buy

Watch out for

Reputation: what owners and the press report. Tap one to see what to check.

Timing chain stretch on the N20 four All years

What to check: Listen for a whine or rattle at a cold start and idle, and ask whether the timing chain, guides and tensioner were replaced with updated parts.

AutoTrader.ca reports owners of 2012–2014 328is with stretched or failed chains, some losing the engine. Euro Premium Parts says the stretch can break the plastic guides. In one owner forum thread two owners describe a whine after a cold start, a third says a whine comes before failure, and a poster who works at a dealer says many early N20s got new engines. In another, two owners report original chains still fine at about 134,000 miles, and one found the old parts in good order when replacing them at 132,000.

Sources ^10,11,12,13
Oil leaks on the N55 six All years One source so far

What to check: Look for oil around the valve cover, the oil filter housing and the oil pan.

Euro Premium Parts lists leaks from these gaskets on the N55, and carbon on the intake valves of cars driven mostly in town.

Sources ¹¹
Coolant leaks on the newer four All years One source so far

What to check: Look for coolant at the upper radiator hose and the oil filter housing.

Euro Premium Parts reports occasional leaks at these two points, cheap to fix.

Sources ¹¹
Automatic gearbox fluid leak All years One source so far

What to check: Look under the gearbox for fluid, where the wiring plug enters it.

AutoTrader.ca says a failed seal at the gearbox's electrical connector can leak fluid, and that leaving it can damage the gearbox.

Sources ¹⁰
iDrive glitches and failed lights All years One source so far

What to check: Try the screen, phone pairing, navigation and reversing camera, and check every headlight and tail light.

AutoTrader.ca reports owners with iDrive crashing or lagging, and with failed LED tail lights, and says xenon and LED headlights are costly to replace.

Sources ¹⁰
Airbag warning light All years One source so far

What to check: Make sure the airbag light goes out after starting.

AutoTrader.ca says some owners blame a faulty seat sensor, often replaced under warranty, and advises having any airbag light fixed before buying.

Sources ¹⁰

Recalls

18V465000 2018–2019
Wrong firmware in the crankshaft sensor can make the engine stall.¹⁴
18V652000 2018
Capacitors in the portable charging cable can fail, with a risk of shock or fire.¹⁴
18V755000 2014–2018
A leaking exhaust gas recirculation cooler can let coolant mix with soot, which can melt the intake manifold and start a fire. Widened by 21V907000.¹⁵
21V586000 2014–2018
The diesel's high-pressure fuel pump can fail and stall the engine while driving.¹⁵
21V907000 2014–2018
More cars and a further fix for the exhaust gas recirculation cooler leak in 18V755000.¹⁵

What buyers say

Reputation: what owners and the press report

Sought after: The six-cylinder 335i and 340i All years

AutoTrader.ca reports owners calling the six-cylinder's performance excellent and favours a manual 335i, and Euro Premium Parts recommends the 335i and 340i for performance and long life.^10,11

Before you pay

Open the buyer's checklist

Every warning and recall for this generation, with a box to tick.