Though these only represent 1% of the total parc in Europe, they are likely to become a more common sight for new vehicles.
Because these are controlled by the ECU, repair and replacement will increasingly involve use of diagnostic equipment, and place even greater importance on training in the aftermarket.
It will also reduce the ability for DIY servicing due to the high cost of tools required, meaning garages could retain the work for longer.
Mike Parsons, proposition owner, engine, electrical and cooling at Unipart, says: “The failures associated with technology or design issues with direct ignition systems represent a good opportunity for workshops.
“We recommend that workshops replace all the coil units and, for block type coils, the plugs and HT leads as well. Systems will become more sensitive to replacement parts of the correct specification and tolerances.”