Guanajuato → San Luis Potosí · Autopista 45D Celaya-Querétaro
The drive from Celaya, Guanajuato, to San Luis Potosí, San Luis Potosí, covers about 228 km (142 miles) along Autopista 45D Celaya-Querétaro, with an estimated travel time of 2h 32m in normal traffic conditions. Celaya is the polo industrial automotriz Honda y Mazda del corredor del Bajío, while San Luis Potosí stands out as the capital potosina y nodo logístico que conecta el Bajío con el norte del país. Sales reps, consultants, real-estate agents and field service professionals who run this route regularly typically depart at sunrise to clear the urban congestion before rush hour and arrive in time for scheduled morning meetings. It also pays to scout two or three reliable fuel-and-rest stops along the way before departure. Assuming average fuel economy of about 28 mpg on gasolina Magna, the trip burns roughly 19 liters (5.0 gallons), costing about MXN 459.80 at typical pump prices. For mileage reimbursement, applying the tarifa promedio de mercado of MXN 6.50/km (MXN 10.46/mile) yields a one-way payout of MXN 1482.00. Keep the trip log, business purpose, odometer readings, and exact route documented in your Clara receipt for IRS compliance and internal audit defensibility. For the Canadian professional driving the 228 km between Celaya and San Luis Potosí, reimbursement of MXN 1482.00 stays excluded from T4 employment income provided the per-kilometre rate matches the CRA's reasonable allowance benchmark for the province. Canadian employers typically reimburse at the CRA reasonable per-kilometre rate (61¢ for the first 5,000 km in 2024) so the payment is excluded from T4 employment income. Keep the GST/HST-compliant fuel receipt from any NRCan-tracked retail network station used during the trip — Canada Revenue Agency (CRA) auditors regularly verify fuel-receipt GST/HST when reviewing T2200 declarations of conditions of employment. The Celaya→San Luis Potosí mileage must be logged with date, business purpose, opening and closing odometer readings inside the corporate expense system before month-end close to remain deductible.