<p>Red Bull team principal Christian Horner is confident there are no major problems with this season's car despite its below-par performance during the first pre-season testing in Jerez last month.<br /><br /></p>.<p>Red Bull, who have won the constructors' championship four years in a row, completed a dismal 21 laps in their new RB10 car.<br /><br />"There's a few things we needed to tighten up on our side but nothing major and obviously Renault have some issues that they are tidying up as well," Horner said in an interview with Sky Sports.</p>
<p>Red Bull team principal Christian Horner is confident there are no major problems with this season's car despite its below-par performance during the first pre-season testing in Jerez last month.<br /><br /></p>.<p>Red Bull, who have won the constructors' championship four years in a row, completed a dismal 21 laps in their new RB10 car.<br /><br />"There's a few things we needed to tighten up on our side but nothing major and obviously Renault have some issues that they are tidying up as well," Horner said in an interview with Sky Sports.</p>