BMW F30 320i and 328i: what to check before buying

Found an early BMW F30 320i or 328i you like? Before you make an offer, find out which engine is fitted and arrange to see it start from cold. If there's an unexplained noise or blue smoke, get it checked before agreeing on a price. “It's always been serviced” is worth following up with invoices.

This guide focuses on those petrol sedans and two documented concerns relevant to cars confirmed to have the N20 engine. It does not establish how frequently either occurs in South Africa or provide a verdict on every F30.

Identify the car before comparing adverts

The F30 is the sixth-generation BMW 3 Series sedan, introduced locally in 2012. Early South African 320i and 328i versions used turbocharged four-cylinder petrol engines, with manual or eight-speed automatic configurations. These are historical range details, not confirmation of an individual vehicle's specification. BMW South Africa's introduction

In the 2015 facelift range, the 330i replaced the 328i. For a car registered around that transition, ask for its actual build and engine information rather than assigning it an engine from the registration year. This guide does not assess the later petrol range, diesels, M3, Touring or GT. Contemporary South African facelift report

Before booking a viewing, request the vehicle identification number (VIN), service records and invoices for major work. You don't need to identify the engine yourself: ask the inspector to check it against the records. Keep a copy of the advert, too.

If the engine is N20, investigate unexplained whine

BMW North America documented a lower-engine whine that rises in pitch with engine speed, linked to possible timing-chain or oil-pump-drive-chain wear on listed N20 F30s. If yours has an N20, ask a BMW-experienced specialist whether that guidance applies to its build and parts. Have unexplained noise investigated; this does not mean every South African 320i or 328i is affected.

The bulletin distinguishes timing-chain assessment from oil-pump-drive-chain evaluation. Ask what the inspection actually covered. Do not attempt a high-rev noise test yourself.

This is a US warranty document, not a recall or a promise of free repairs in South Africa. Ask a local BMW dealer to check whether any recall or service action applies to your VIN. BMW's technical bulletin

Arrange a start from cold

Separately, BMW North America documented brief cold-start blue smoke on N20/N26 models including the F30, potentially without boost faults or apparent driving problems. Its guidance identifies oil entering the induction or turbo system and recognises several possible causes. Smoke alone does not identify a failed part. BMW's cold-start smoke bulletin

For a confirmed-N20 car, arrange a cold start outdoors and observe from a safe position away from the exhaust. If blue smoke appears, seek specialist diagnosis before pricing a repair into your offer.

Make the paperwork useful

For this BMW, as for any used car, compare invoice dates and recorded kilometres with the advertised history. If the seller says major work has been done, ask: “Which workshop did it, and can I see the invoice?” Give that paperwork to the inspector. It shows what was done, but it isn't a guarantee that nothing else needs attention.

Ask the seller's permission to have the inspecting workshop review previous repair details. Request a written report that separates observations, confirmed findings and checks still outstanding. If access or time prevents a check, have that limitation recorded before deciding whether to proceed.

Use our odometer rollback guide to organise the mileage questions and our used-car buying checklist for the wider viewing. The focused checks here should form part of a broader assessment of the vehicle you intend to buy.

Decide from the findings

Pause the purchase if engine identity is uncertain, an unexplained symptom remains, or the seller will not allow the assessment you need. Ask for the missing evidence before committing. Where work is confirmed, obtain a written scope and quotation from the workshop that would undertake it.

You can find an E-Moto agent to help with the purchase or inspection. Before booking, ask whether they work with these BMWs, have the equipment needed for the checks, and will give you a written report. Send the advert and records so they know what you need checked.

Sources reviewed on 13 September 2026. This focused guide does not cover every F30 fault and cannot establish the condition of an individual car.