Isso deve servir:
SELECT c.*
FROM cars c
JOIN
(
SELECT carCode
FROM articles
WHERE Accepted = 1
GROUP BY carCode
HAVING COUNT(carCode) > 1
) a ON c.code = a.carCode
SELECT c.*
FROM cars c
JOIN
(
SELECT carCode
FROM articles
WHERE Accepted = 1
GROUP BY carCode
HAVING COUNT(carCode) > 1
) a ON c.code = a.carCode