ESSENTIAL EQUIPMENT
27mm socket (oil filter)
Hyundai’s family-sized saloon and estate first appeared in 2011 and soon became a recognised competitor for the Ford Mondeo, Volkswagen Passat and Vauxhall Insignia. It lasted until 2019 in a market where MPVs and SUVs were becoming more popular than the traditional family car.
Known as the i40, but based on the Sonata, under the skin there’s a multi-link suspension set-up at the rear and MacPherson struts with lower arms at the front (anti-roll bars are fitted at the front and rear). The brakes consist of discs all round (vented at the front, solid at the rear), but with an electronic park brake (EPB) at the back. So any servicing work on the rear brakes means diagnostic equipment must be connected to switch to service mode and back off those electronic calipers.
Overall difficulty rating
The 1685cc common-rail four-cylinder diesel engine that powers the i40 seen here is straightforward to service. Before draining the engine oil, it’s worthwhile removing the oil filter to allow more of that oil to be removed. We suspect we didn’t manage to drain as much of the oil as we had hoped because of the position of the drain plug, which is on the side of the sump. Consequently, despite the oil capacity of the engine is 5.3 litres, we only added 5 litres and found it was sufficient.
The following steps were completed at AES on a 2016 i40, which had a mere 61,733 miles on the