Buying an early BMW F20 116i or 118i in South Africa

An early BMW 116i or 118i deserves more than a quick lap around the dealership. Before paying a deposit, establish which engine the car has and whether the owner has been working around an unresolved problem. Ask direct questions: does it need fluid top-ups between services, and has it ever refused to start or cut out?

This guide covers early F20 five-door petrol models with the N13 engine. It offers two focused checks, not a verdict on every 1 Series or a list of faults every example will develop.

Make sure you are looking at the right version

The F20 five-door arrived in South Africa in 2011. The three-door is the F21, which is outside this guide's technical scope. Local model history

BMW South Africa's specifications identify early 116i and 118i variants with 1.6-litre, four-cylinder N13 engines. However, local reporting on the 2015 facelift describes a 1.5-litre, three-cylinder 118i. The badge and registration year alone are not enough to choose the relevant advice. Facelift report

Ask the seller for the VIN and build information, then have the inspector confirm the installed engine. Diesel, six-cylinder and later three-cylinder cars need their own assessment.

Coolant top-ups need an explanation

HELLA documents gradual coolant loss through a cracked coolant-temperature-sensor housing on an F20 N13B16A application, using a manual 116i as its example. The South African BMW specifications use different N13 suffixes, so a specialist must confirm whether the installed component matches. This is a documented possibility, not proof that every local N13 has the problem. HELLA coolant guidance

Ask how often coolant has been added and request invoices for previous leak investigations. If the answer is “just a sensor”, ask what confirmed that diagnosis and whether the loss stopped after repair.

The access described by HELLA requires dismantling; a casual look cannot clear that component. Arrange professional cooling-system assessment when loss is reported, with any access limitations recorded. Do not open a hot cooling system, and do not assume every leak comes from this sensor.

On an early 118i, ask about intermittent shutdown

HELLA's guidance for the 2011–2015 F20 118i 1.6 N13 describes ignition that switches off and occasional engine shutdown. Its diagnostic discussion identifies the engine/gearbox earth connection as a possible cause when other peripheral checks find no fault: corrosion can compromise the connection. This does not establish the cause on the car you are viewing, nor does it automatically apply to a 116i. HELLA ignition guidance

Ask about previous cut-outs, failed starts and diagnostic visits. Request the actual workshop findings rather than accepting “the computer was reset” as a completed repair. An unexplained shutdown calls for professional diagnosis before purchase. Do not take a car with an unresolved cut-out complaint onto the road to reproduce it yourself; discuss a safe assessment or transport arrangement with the workshop.

Turn the viewing into a decision

These are general purchase checks, not additional claimed F20 weaknesses. Agree on a cold start before arriving, compare dated invoices with the seller's account, and note anything the seller cannot demonstrate. Photograph relevant records with permission so you can discuss them accurately afterwards.

On a safe, permitted test drive, assess ordinary driving, parking manoeuvres and the controls you will use daily. Record an unexplained symptom instead of guessing its cause. Our used-car test-drive checklist helps structure the route; the used-car buying checklist covers the wider purchase process.

Before committing, separate what has been checked from what remains unknown. A repair invoice is useful evidence of work, not a guarantee of future reliability. If a consequential concern remains unresolved, postpone the decision rather than letting a discount stand in for diagnosis.

Use E-Moto to find an agent and confirm experience with the particular F20 engine, available diagnostic equipment and the written findings you will receive. Agree on what the inspection includes before booking.

Sources checked on 3 November 2026. The supplier guidance establishes specific diagnostic concerns, not South African failure rates; no model-wide reliability ranking is implied.