Complex sentence: Toivonen also competed in two WRC events: the 1000 Lakes with a Fiat 131 Abarth and the RAC with a Ford Escort RS. He retired from both, but at his home event he had been matching the pace of the leaders before leaving the road.
Split into simpler sentences: Toivonen also competed in two WRC events; at the 1000 Lakes with a Fiat 131 Abarth and at the RAC with a Ford Escort RS, but retired in both. However, at his home event he was matching the pace of the leaders before leaving the road.