\begin{table}[H]
\centering
\begin{tblr}[         %% tabularray outer open
]                     %% tabularray outer close
{                     %% tabularray inner open
colspec={Q[]Q[]Q[]},
}                     %% tabularray inner close
\toprule
mpg & cyl & disp \\ \midrule %% TinyTableHeader
21.0 & 6 & 160 \\
21.0 & 6 & 160 \\
22.8 & 4 & 108 \\
\bottomrule
\end{tblr}
\end{table} 
